Statistical Analysis for Influence of Factors on Morphological Evolution in Semi-Solid Al-6Zn-2.5Mg-0.5Cu Alloy by Cooling Plate Method* 1

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "Statistical Analysis for Influence of Factors on Morphological Evolution in Semi-Solid Al-6Zn-2.5Mg-0.5Cu Alloy by Cooling Plate Method* 1"

Transcription

1 Materials Transactions, Vol. 52, No. 5 (211) pp. 862 to 867 Special Issue on Aluminium Alloys 21 #211 The Japan Institute of Light Metals Statistical Analysis for Influence of Factors on Morphological Evolution in Semi-Solid Al-6Zn-2.5Mg-.5Cu Alloy by Cooling Plate Method* 1 Sung-Yong Shim, Dae-Hwan Kim* 2, Young-Rok Seong* 2 and Su-Gun Lim* 3 i-cube Center, Engineering Research Institute, Gyeongsang National University, 9 Gazwa, Jinju 66-71, Korea The cooling plate method is a simple and effective process for casting ingots in thixoforming feedstock. Analysis of variance (ANOVA) and the Taguchi design method were used in order to reveal the effect on microstructure of major factors in this paper. ANOVA was used to define the effect of parameters such as the pouring temperature, cooling plate angle, holding time after pouring and mold temperature. Among all the factors, pouring temperature exerted the greatest statistically significant effect, especially on grain size. To optimize the conditions to ensure reproducibility, the plate angle and holding time were varied to reduce the effect of the pouring temperature. In the results, a lower plate angle and an extended holding time with a pouring temperature just below the liquid point afforded the formation of a microstructure with rosetteshaped grains in semisolid metal (SSM) slurries. Furthermore, when this slurry was reheated to the liquid/solid temperature, the morphology of the grains was transformed into globular. [doi:1.232/matertrans.l-mz2113] (Received October 1, 21; Accepted February 28, 211; Published May 1, 211) Keywords: cooling plate method, analysis of variance (ANOVA), aluminum-zinc-magnesium alloy, semi-solid process 1. Introduction The cooling plate method is based on the separation theory proposed in the 197s, in which crystallization occurs during cooling at the wall of the mold and is then separated by convection of melts or specific gravity. This allows the fabrication of a billet with globular and fine primary grains by pouring the melt through a cooling plate. 1) In designing an experiment to determine the fabrication conditions in the cooling plate method, Motegi 2) and Lim 3,4) produced a feedstock with polygonal grains by examining fabricating conditions, such as the pouring temperature, angle and length of the cooling plate. Motegi applied this method to continuous casting. 5,6) On the other hand, Haga 7) reported that the billet for thixoforming can be made by modifying the pouring temperature and mold material, and obtained grains with a rosette structure that can be transformed to globular grains more quickly than a conventional cast ingot when reheated to the liquid/solid temperature. In contrast, Birol 8) used the pouring temperature and cooling plate to optimize the conditions for producing thixoforming feedstock. However, the detailed conditions and effects of each parameter are unclear. Therefore, it is important to determine the optimal conditions for reproducibility using statistically and focused experiments of the cooling plate method. Because the optimum conditions must be determined for large scale systems by repeated experimentation, the efficiency is reduced as a result of the increased searching time. To solve this problem, this study examined the optimum conditions using analysis of variance (ANOVA) for all the parameters and ordered conditions of the cooling plate method. ANOVA is a suitable analysis method for non-linear parameters, such as the product conditions, because the major factors with a greater effect on the measured values than the errors can be determined by dividing the R 2 value for each parameter. 9 11) * 1 The Paper Contains Partial Overlap with the ICAA12 Proceedings by USB under the Permission of the Editorial Committee. * 2 Graudate Student, Gyeongsang National University * 3 Corresponding author, Thus, it is possible to determine the factors affecting the microstructures of the factors in the cooling plate method. The aims of this study were to determine the major factors affecting the microstructure of semi-solid billets fabricated by the cooling plate method and to observe the morphological evolution of the Al-Zn-Mg alloy billets during reheating process for thixoforming. 2. Experimental Procedures In order to determine the major and statistically significant factors affecting the microstructure of SSM slurries in the cooling plate method, the effect of each factor affecting the microstructure of SSM billets was examined in terms of the grain size and the shape factor. Parameters in this study are presented in Table 1. The pouring temperature, cooling plate angle and holding time were categorized into four levels and the mold temperature, cooling condition of plate (water and air) and lower furnace temperature were categorized into two levels. The material used in this study was a mild strength aluminum alloy with the composition (mass%) of Al-6.5Zn-2.5Mg-.5Cu-.2Mn-.1Fe-.1Zr-.3Ti. Approximately 1.3 kg of the alloy was heated to 72 C in a graphite crucible by resistance heating furnace, and poured into a steel mold through a copper cooling plate like the Fig. 1. SSM billets, 14 mm in height and 64 mm in diameter, were prepared by L 16 ( ) mixed orthogonal array table, as shown in Table 2. The process was repeated three times for each condition. K type thermocouples were installed at the bottom of the cooling plate and mold to detect the change of melt temperature. The conventional casting billet also was prepared in order to compare to the SSM billet. 3. Results and Discussion 3.1 Determining product parameters via analysis of variance Figure 2 shows the microstructures of the billets fabricated using the mixed orthogonal array table. A rosette type structure was obtained at a low pouring temperature of 65 C

2 Statistical Analysis for Influence of Factors on Morphological Evolution 863 Table 1 Product parameters and their levels. Parameters unit Level Pouring Temperature C Angle of cooling plate degree Holding time s Mould temperature C Cooling condition air water Lower furnace temperature C 4 5 Cooling plate Insulator Melts Low furnace Fig. 1 Schematic diagram of cooling plate apparatus. and 66 C with a superheat of T < 2 C and a watercooled plate. This structure consisted of ripened equiaxed dendrites with an interdendritic eutectic phase caused by solidification of the remaining liquid surrounded grains, approximately 58 mm in size. However, a dendritic structure with a dendrite arm spacing of 12 mm appeared when the pouring temperature was increased to T > 2 C, regardless of the other factors. ANOVA was performed for the grain size and shape factor, and the results are listed in Tables 3 and 4, respectively. ANOVA of the grain size in Table 3 showed that the pouring temperature and water-cooled plate were the factors that gave an associated P-value for a grain size of <:3 (i.e., a level of significant of ¼ :3, or 97% confidence). This confirmed the statistical significance of these factors and their significant effect on the grain size of the billets. However, in the case of the shape factor, all the factors except for the temperature of the low furnace and mold were significant (P < :3). The effects of the cooling plate angle and holding time immediately after pouring were larger than those of the grain size. Here, the DF is degree of freedom, Seq. SS is the sequence sums of squares, Adj. SS is the adjusted sums of squares and Adj. MS is the adjusted means of squares. Thus, F is also the F-test value and P is the significance probability. Table 2 L 16 ( ) orthogonal array and measured values. Order Pouring Plate angle Holding time Mold Cooling Lower furnace Avg. of grain Avg. of shape temperature ( C) (degree) (s) temperature ( C) condition temperature ( C) size (m) factor Air Air water water water water Air Air water water Air Air Air Air water water Table 3 The results of analysis of variation for the grain size. Table 4 The results of analysis of variation for the shape factor. Parameters DF Seq. SS Adj. SS Adj. MS F P Pouring Temperature Cooling plate angle Holding time Mold temperatures Cooing condition Lower furnace temperature Error Total Parameters DF Seq. SS Adj. SS Adj. MS F P Pouring Temperature Cooling plate angle Holding time Mold temperatures Cooing condition Lower furnace temperature Error Total

3 864 S.-Y. Shim, D.-H. Kim, Y.-R. Seong and S.-G. Lim Fig. 2 Microstructures of ingots fabricated according to the table of L16 (44 24 ) orthogonal array12) 1 (a) Percent (b) 5 All of data are supposed a normal distribution in statistically procedure. It is necessary to confirm a normal distribution for a obtained data. If a strong relationship between scattered data points and their regression line in normal distribution plot, it shows that the obtained data can be use for a statical analysis. analysis for reliability consists of analyzing the results of an ANOVA by assigning residual values to each data point in the data set. A Fitted Value plot helps to detect a not-modeled behavior in the underlying relationship. The residual plots of residuals for the grain size are presented in Fig. 3. And the normal probability plot is presented in Fig. 3(a). It can be noticed that the residuals fall on a straight line, which means that the residuals are normally distributed. Figure 3(b) shows the residual values with fitted values for grain size of semi solid ingot. Figure 3(b) indicates that maximum variation of 1 to 1, which shows the high correlation between fitted valued and observed values. Similarly, Fig. 3 displays the residual plots for shape factor. The normal distribution of residuals for shape factor is presented in Fig. 4(a). It is observed that the residuals are distributed normally and a straight line is adequate. The fitted values versus the residuals are presented in Fig. 4(b). The residuals observed are from :5 to.5, which also shows the high correlation between experimental parameters and shape factor. The affecting ratio of employed parameters in this paper is listed in Table 5. The affecting ratio was calculated by sum of squares of deviation (Sqe. SS), in order to quantify the degree of effect of the parameters on microstructure characteristic of cooling plate casting ingot.12) The influence of pouring temperature is largest among the six parameters as the results of ANOVA in Table 5. In the case of grain size, Fitted value Fig. 3 The normal probability and fitted value for grain size. (a) Normal probability plot, (b) Fitted value for residual the affecting ratio of the pouring temperature is 61% and the water-cooled plate is 9%. This results show that the microstructure with fine grain can be taken if the melt having a low temperature is poured on water-cooled cooling plate and the globular grain can be obtained by cooling plate angle and

4 Statistical Analysis for Influence of Factors on Morphological Evolution 865 Percent (a) (b) Fitted value Fig. 4 The normal probability and fitted value for shape factor. (a) Normal probability plot, (b) Fitted value for residual Table 5 Parameters The affecting ratio of each parameter. Seq. SS Grain size Affecting ratio (%) Shape factor Seq. SS Affecting ratio (%) Pouring Temperature Cooling plate angle Holding time Mold temperature Cooing condtition Lower furnace temperature Error Total holding time. The affecting ratio of pouring temperature for shape factor is 71%. The results of ANOVA show that all of the employed product parameters in previous studies are statistically insignificant. Thus, the microstructure of semi solid ingot can be obtained by controlling the parameters having the significance of level in statistics. In accordance with the above ANOVA results, the pouring temperature was defined as the main significant factor for billets in the cooling plate method, indicating that the microstructures of the SSM billets can be changed easily when this temperature is not controlled. Ohno and Motegi 1,2) also reported that, in order to obtain a fine equiaxed structure, the separation of crystals should be promoted in the liquid with a low under-cooling, and the pouring temperature of the alloy must be as low as possible to prevent remelting of the free crystals in the liquid. They identified the pouring temperature to be the most significant factor in the cooling plate method for fabricating SSM billets. These results show that the crystals remaining in the mold were separated in the melts with a low under-cooling using the cooling plate and that the primary direction of growth can be prevented because the distance of the adjacent grains was reduced by many of the crystals separated from the cooling plate. Therefore, a low pouring temperature is preferred in terms of the cooling ability of the cooling plate. The cooling plate could cool the melt to just below the liquidus temperature of the alloy, which stabilized the initial size of the primary crystals so that they were able to survive and grow in the liquid after being poured into the mould. 3.2 Effect of cooling plate and holding time The cooling rate also is considerable parameter with effect on microstructure of casting ingot. Conventionally, equiaxed grain can be formed at a low cooling rate. The cooling rate of below.2 C/s also can form the equiaxed grain in previous studies. 13,14) Therefore, the temperature of mold and furnace is used to control the cooling rate and effect of cooling rate on microstructure of semi solid Al-Zn-Mg alloy was confirmed. The temperature of mold and furnace was hold at 57 and 63 C and the parameters with effect on grain size and shape factor was employed as the melts was poured at 65 C, water cooled plate with tilted 3 deg into the mold at given condition. The microstructures were observed with increasing holding time as 6 s, 3 s, 6 s and 12 s. For comparing with effect of a low pouring temperature on microstructure, the casting was carried out at given condition without cooling plate. The measured cooling rate of the melts was.2 and.3 C/s, respectively, at mold temperature of 57 and 63 C. These two cooling rate were enough to form the equiaxed structure. The cooling rate was dropped with increasing the holding temperature. The change of the microstructure during maintenance in the furnace was displayed in the Figs. 5 and 6. In Fig. 5, the grains with rosette morphology were appeared at the holding time of 6 s and grains became to be equiaxed grains at holding time of 6 s. When cooling plate is not used (Fig. 6), however, the morphology of grain was a large rosette type, equiaxed grain was not appeared. The difference in microstructure evolution was clearly revealed from Fig. 6 with cooling rate of.3 C/s. The observed morphology was more rosettes typed in both of specimens since a higher maintenance temperature. However, cooling plate cast ingot has a many of grains just at 6 s, and continuously became to be equiaxed grain. In other hands, the microstructure of ingot without cooling plate was dendritic structure by 6 s, although the pouring temperature was lower than a conventional pouring temperature. These results show that the remaining crystals in the mould were separated in melts with a low under-cooling by using the cooling plate and that the preferred-direction growth can be prevented because the distance of the adjacent grains was reduced by many of crystals separated from the cooling plate. 3.3 Microstructure evolution during reheating process In Fig. 7, a gradual grain growth with increasing holding time is shown. The dendritic structures were transformed into grains during isothermal holding at 615 C, and entrapped

5 866 S.-Y. Shim, D.-H. Kim, Y.-R. Seong and S.-G. Lim 6s 12s Using cooling plate Fig. 5 2µ m Change in the microstucture with increasing holding time in the different process, when the cooling ratio is.2 C/s. 3s 6s 12s Without cooling plate Using cooling plate 6s Cooling rate of.3 C/s 3s Without cooling plate Cooling rate of.2 C/s 6s Fig. 6 2 µ m Change in the microstucture with increasing holding time in the different process, when the cooling ratio is.3 C/s. Fig. 7 The microstructural evolution after isothermal holding time from to 1,8 s at 615 C. liquids appeared in the grains. In addition, the billets with rosette-type structures maintained a more polygonal morphology while the shape factor that was developed through isothermal holding time and interdendritic eutectic phase disappeared in early stage of reheating. A remelted phase surrounding the grains and remelted pools in the billets appeared after an isothermal holding time of 3 min. The grain size was limited to 11 mm after 3 min of isothermal holding in SSM billets but growth of the conventional casting billet occurred rapidly at the initial stage of reheating, to give a grain size of 25 mm. During the partial remelting, the difference between the dendritic and rosette-type structures was attributed to the globalization mechanism in which the rapidly grown grains became coarsened grains by calescence of the second dendrite arms in the early stage. However, in the case of the SSM billets, the rosette-type structure was quickly changed into polygonal grains by interdendritic eutectic phase melting and grain growth was prevented and globalized by wetting melt and grains in order to reduce the solid/liquid interface energy. This was explained in Fig. 8 by the fact that the principal mechanism of grain growth in the early stage was coalescence of the second dendrite arms in the case of dendritic structures, while Ostwald ripening became the main mechanism with increasing reheating time.

6 Statistical Analysis for Influence of Factors on Morphological Evolution 867 Fig. 8 Proposed mechanism for the evolution of dendritic to globular structure when dendritic structures 16) and rosette-type structures following reheating. For the rosette-type grain, interdendritic eutectic phase was remelted in the early stage by diffusion of solute elements and its coalescence, leading to insignificant grain growth but globalization occurred in order to reduce the interfacial area of the solid/liquid. Extended reheating time might induce coalescence between two grains. When the melts were kept isothermally in the heated mold, the solute elements were transported to the liquid phase with increasing holding time, leading to a larger difference in concentration between the grains and eutectic phase due to the increasing diffusion rate of Zn, Mg and Cu etc. 15) Therefore, the present billets with rosette type structures increased the constitutional difference in Zn, Mg and Cu between the grains and interdendritic phase, which may have induced previous partial remelting of the interdendritic eutectic phase when reheated into the solid/liquid range of the alloy. This may have advantages in the thixoforming process because the grain growth rate was low and the reaction occurred at the solid/liquid interface. 4. Conclusions In this study, the effect of parameters on microstructure Al-Zn-Mg alloy by cooling plate method was analyzed by analysis of variance. The result can be summarized to; (1) The results from ANOVA showed that the pouring temperature is the main effect factor in the cooling plate method. In order to obtain SSM billets with an acceptable level of reproducibility, the pouring temperature was set to a superheat ðtþ < 2 C to induce the formation of separate crystals on the cooling plate and support crystal growth in the mold. (2) The cooling plate cast semi solid Al-Zn-Mg alloy ingot had rosette type structures and were produced at a pouring temperature with a superheat of 1 C, a watercooled plate and a 6 s holding time in the mold. Also, the extended holding time after pouring allow to be globular grain. (3) In the reheating process, compared with conventional cast ingots with dendritic structures, the rosette-type structures were transformed into polygonal grains in the early stage of reheating by remelting of the interdendritic eutectic phase because of the different concentrations of the solute elements. This billet has a promising potential for application to the feedstock for thixoforming. Acknowledgement This research was financially supported by the Ministry of Education, Science Technology (MEST) and Korea Institute for Advancement of Technology (KIAT) through the Human Resource Training Project for Regional Innovation. REFERENCES 1) A. Ohno: Solidification, (Springer-Verlag, Tokyo, 1987). 2) T. Motegi, K. Kondou, C. Liu and S. Aoyama: Proc. 4th Decennial Int. Conf. on Solidification Processing, (1997) p. 7. 3) J. P. Eom, D. H. Jang, S. G. Lim, D. G. Kim and D. E. Yoon: J. Korean Foundrymen s Soc. 16 (1996) ) K. S. Kim and S. G. Lim: J. Kor. Inst. Met. Mater. 38 (2) ) F. Tanabe, T. Motegi and E. Sugiura: J. JILM 53 (23) ) H. Shimada, F. Kido and T. Motegi: J. JILM 58 (28) ) T. Haga and S. Suzuki: J. Mater. Process Technol. 118 (21) ) Y. Birol: J. Mater. Process Technol. 186 (27) ) Barnes and J. Wesley: Statistical Analysis for Engineers and Scientists, (McGraw Hill, New York, 1994). 1) R. K. Roy: Design of Experiments Using the Taguchi Approach, (John Wiley & Sons, Inc. New York, 21). 11) J. Dong, S. S. Cui, Q. C. Le and G. M. Lu: Mater. Sci. Eng. A 345 (23) ) J. Y. Ahn, D. E. Kim, J. Y. Choi and K. H. Shin: J. of Kor. Soc. Precision Eng. 2 (23) ) W. W. Mullins: J. Appl. Phys. 34 (1963) ) K. Xia and G. Tausig: Mater. Sci. Eng. A 246 (1998) ) M. Adachi, S. Sato, H. Sasaki, Y. Harada, N. Ishimashi and T. Kawasaki: J. JILM 58 (28) ) E. J. Zoqui and M. H. Robert: J. Mater. Process Technol. 19 (21)

Continuous Rheocasting for Aluminum-Copper Alloys

Continuous Rheocasting for Aluminum-Copper Alloys Materials Transactions, Vol. 43, No. 9 (2002) pp. 2285 to 2291 c 2002 The Japan Institute of Metals Continuous Rheocasting for Aluminum-Copper Alloys Kiyoshi Ichikawa, Masahito Katoh and Fumio Asuke Ecology-Oriented

More information

Study on rheo-diecasting process of 7075R alloys by SA-EMS melt homogenized treatment

Study on rheo-diecasting process of 7075R alloys by SA-EMS melt homogenized treatment IOP Conference Series: Materials Science and Engineering PAPER OPEN ACCESS Study on rheo-diecasting process of 7075R alloys by SA-EMS melt homogenized treatment Recent citations - Wear analysis of A356

More information

Effects of quench aging treatment on microstructure and tensile properties of thixoformed ZA27 alloy

Effects of quench aging treatment on microstructure and tensile properties of thixoformed ZA27 alloy Effects of quench aging treatment on microstructure and tensile properties of thixoformed ZA27 alloy T.-J. Chen*, Y. Hao and Y.-D. Li The effects of quench aging heat treatment on microstructure and tensile

More information

Liquid Solubility of Manganese and Its Influence on Grain Size of Mg-Al Alloys* 1

Liquid Solubility of Manganese and Its Influence on Grain Size of Mg-Al Alloys* 1 Materials Transactions, Vol. 47, No. 8 (2006) pp. 1968 to 1974 #2006 The Japan Institute of Light Metals Liquid Solubility of Manganese and Its Influence on Grain Size of Mg-Al Alloys* 1 Yosuke Tamura,

More information

ROLE OF SOLUTE AND TRANSITION METALS IN GRAIN REFINEMENT OF ALUMINUM ALLOYS UNDER ULTRASONIC MELT TREATMENT

ROLE OF SOLUTE AND TRANSITION METALS IN GRAIN REFINEMENT OF ALUMINUM ALLOYS UNDER ULTRASONIC MELT TREATMENT 13 th International Conference on Aluminum Alloys (ICAA13) Edited by: Hasso Weiland, Anthony D. Rollett, William A. Cassada TMS (The Minerals, Metals & Materials Society), 2012 ROLE OF SOLUTE AND TRANSITION

More information

Effects of Mechanical Vibration on Cooling Rate and DAS of AC4C Aluminum Alloy Gravity Die Castings

Effects of Mechanical Vibration on Cooling Rate and DAS of AC4C Aluminum Alloy Gravity Die Castings Materials Transactions, Vol. 50, No. 11 (2009) pp. 2604 to 2608 #2009 The Japan Institute of Metals Effects of Mechanical Vibration on Cooling Rate and DAS of AC4C Aluminum Alloy Gravity Die Castings Naoki

More information

Sub-Liquidus Casting: Process Concept &

Sub-Liquidus Casting: Process Concept & Sub-Liquidus Casting: Process Concept & Product Properties PRESENTATION OUTLINE SSM Process Advantages & Cost- Effectiveness The SLC Slurry Process What Makes SLC Work? Properties and Characteristics Summary

More information

Effect of Pouring Temperature and Water Cooling on the Thixotropic Semi-solid Microstructure of A319 Aluminium Cast Alloy

Effect of Pouring Temperature and Water Cooling on the Thixotropic Semi-solid Microstructure of A319 Aluminium Cast Alloy Materials Research. 2015; 18(1): 170-176 2015 DOI: http://dx.doi.org/10.1590/1516-1439.304114 Effect of Pouring Temperature and Water Cooling on the Thixotropic Semi-solid Microstructure of A319 Aluminium

More information

The Effects of Superheating Treatment on Distribution of Eutectic Silicon Particles in A357-Continuous Stainless Steel Composite.

The Effects of Superheating Treatment on Distribution of Eutectic Silicon Particles in A357-Continuous Stainless Steel Composite. Please cite this paper as M. N. Mazlee & J. B. Shamsul. (2012). The Effects of Superheating Treatment on Distribution of Eutectic Silicon Particles in A357-Continuous Stainless Steel Composite, Advanced

More information

Optimization of squeeze casting parameters for non symmetrical AC2A aluminium alloy castings through Taguchi method

Optimization of squeeze casting parameters for non symmetrical AC2A aluminium alloy castings through Taguchi method Journal of Mechanical Science and Technology 26 (4) (2012) 1141~1147 www.springerlink.com/content/1738-494x DOI 10.1007/s12206-012-0215-z Optimization of squeeze casting parameters for non symmetrical

More information

OPTIMIZATION OF CASTING PARAMETERS FOR CASTING OF AL/RHA/RM HYBRID COMPOSITES USING TAGUCHI METHOD

OPTIMIZATION OF CASTING PARAMETERS FOR CASTING OF AL/RHA/RM HYBRID COMPOSITES USING TAGUCHI METHOD OPTIMIZATION OF CASTING PARAMETERS FOR CASTING OF AL/RHA/RM HYBRID COMPOSITES USING TAGUCHI METHOD A. PAVAN KUMAR #1, B. JYOTHU NAIK *2, CH. VENKATA RAO #3, SADINENI RAMA RAO *4 1 M. Tech Student, Mechanical

More information

Microstructure and Microhardness of an Al-Zr-Ti-Fe Alloy

Microstructure and Microhardness of an Al-Zr-Ti-Fe Alloy Proceedings of the 12th International Conference on Aluminium Alloys, September 5-9, 2010, Yokohama, Japan 2010 2010 The Japan Institute of Light Metals pp. 1004-1008 1004 Microstructure and Microhardness

More information

Induction Heating Process

Induction Heating Process DaWei Induction Heating Machine Co.,Ltd E-mail: inductionheating@gpgyjr.com.cn Induction Heating Process During the thixoforming process, it is very important to obtain a uniform temperature, which affects

More information

Investigation on the Rate of Solidification and Mould Heating in the Casting of Commercially Pure Aluminium in Permanent Moulds of varying Thicknesses

Investigation on the Rate of Solidification and Mould Heating in the Casting of Commercially Pure Aluminium in Permanent Moulds of varying Thicknesses IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-issn: 2278-1684 Volume 6, Issue 1 (Mar. - Apr. 2013), PP 33-37 Investigation on the Rate of Solidification and Mould Heating in the Casting

More information

The Effect of La Addition on the Microstructure and Tensile Properties of Hot-Extruded Al 15%Mg 2 Si Composite

The Effect of La Addition on the Microstructure and Tensile Properties of Hot-Extruded Al 15%Mg 2 Si Composite The Effect of La Addition on the Microstructure and Tensile Properties of Hot-Extruded Al 15%Mg 2 Si Composite Paper Presenter: S.H. Allameh 1 A. Akhlaghi 2, M. Noghani 3, M. Emamy 4. 1,4- School of Metallurgy

More information

Grain Refinement of an Al-2 wt%cu Alloy by Al3Ti1B Master Alloy and Ultrasonic Treatment

Grain Refinement of an Al-2 wt%cu Alloy by Al3Ti1B Master Alloy and Ultrasonic Treatment IOP Conference Series: Materials Science and Engineering PAPER OPEN ACCESS Grain Refinement of an Al-2 wt%cu Alloy by Al3Ti1B Master Alloy and Ultrasonic Treatment To cite this article: E Q Wang et al

More information

Simulation and Experimental Analysis of Metal Jet Emission and Weld Interface Morphology in Impact Welding* 1

Simulation and Experimental Analysis of Metal Jet Emission and Weld Interface Morphology in Impact Welding* 1 Materials Transactions, Vol. 52, No. 5 (2011) pp. 1003 to 1008 Special Issue on uminium loys 2010 #2011 The Japan Institute of Light Metals Simulation and Experimental Analysis of Metal Jet Emission and

More information

Friction Stir Lap Welding of Magnesium Alloy and Zinc-Coated Steel

Friction Stir Lap Welding of Magnesium Alloy and Zinc-Coated Steel Materials Transactions, Vol. 5, No. 11 (29) pp. 2598 to 263 #29 The Japan Institute of Metals Friction Stir Lap Welding of Magnesium Alloy and Zinc-Coated Steel Y. C. Chen* and K. Nakata Joining and Welding

More information

Morphology of Intermetallic Compounds in Al-Si-Fe Alloy and Its Control by Ultrasonic Vibration*

Morphology of Intermetallic Compounds in Al-Si-Fe Alloy and Its Control by Ultrasonic Vibration* Materials Transactions, Vol. 48, No. 9 (2007) pp. 2467 to 2475 #2007 Japan Foundary Engineering Society Morphology of Intermetallic Compounds in Al-Si-Fe Alloy and Its Control by Ultrasonic Vibration*

More information

Predicting the Rheological Behavior of AISI D2 Semi- Solid Steel by Plastic Instability Approach

Predicting the Rheological Behavior of AISI D2 Semi- Solid Steel by Plastic Instability Approach American Journal of Materials Engineering and Technology, 2013, Vol. 1, No. 3, 41-45 Available online at http://pubs.sciepub.com/materials/1/3/3 Science and Education Publishing DOI:10.12691/materials-1-3-3

More information

K S T S ' = K L T L ' + vl v

K S T S ' = K L T L ' + vl v Heat Flow and Interface Stability Elemental metals - solidification rate controlled by rate at which latent of fusion can be conducted away from the solid/liquid interface Heat conduction can be either

More information

MICROSTRUCTURE AND CRYSTALLOGRAPHIC TEXTURE OF STRIP-CAST 4.3wt%Si STEEL SHEET

MICROSTRUCTURE AND CRYSTALLOGRAPHIC TEXTURE OF STRIP-CAST 4.3wt%Si STEEL SHEET Pergamon Scripta Materialia, Vol. 40, No. 8, pp. 881 885, 1999 Elsevier Science Ltd Copyright 1999 Acta Metallurgica Inc. Printed in the USA. All rights reserved. 1359-6462/99/$ see front matter PII S1359-6462(99)00044-5

More information

Rheo-squeeze casting of semi-solid A356 aluminum alloy slurry

Rheo-squeeze casting of semi-solid A356 aluminum alloy slurry Rheo-squeeze casting of semi-solid A356 aluminum alloy slurry MAO Wei-min( 毛卫民 ), ZHENG Qiu( 郑秋 ), ZHU Da-ping( 朱达平 ) School of Materials Science and Engineering, University of Science and Technology Beijing,

More information

Parametric Optimization of Lathe Turning for Al-7075 Alloy Using Taguchi: An Experimental Study

Parametric Optimization of Lathe Turning for Al-7075 Alloy Using Taguchi: An Experimental Study IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-issn: 2278-1684,p-ISSN: 2320-334X, Volume 14, Issue 3 Ver. VI. (May - June 2017), PP 39-45 www.iosrjournals.org Parametric Optimization of

More information

Application of aluminum alloy castings in aerospace

Application of aluminum alloy castings in aerospace February 2010 Research & Development Effect of returns on microstructure and mechanical properties of Al-Cu based alloys *Li Min, Wang Hongwei, Wei Zunjie, Zhu Zhaojun (School of Materials Science and

More information

Vibration influence on structure and density of aluminum alloys

Vibration influence on structure and density of aluminum alloys IOP Conference Series: Materials Science and Engineering PAPER OPEN ACCESS Vibration influence on structure and density of aluminum alloys To cite this article: A A Usoltsev et al 2016 IOP Conf. Ser.:

More information

New Cu-based Bulk Metallic Glasses with High Strength of 2000 MPa

New Cu-based Bulk Metallic Glasses with High Strength of 2000 MPa Materials Science Forum Online: 2004-03-15 ISSN: 1662-9752, Vols. 449-452, pp 945-948 doi:10.4028/www.scientific.net/msf.449-452.945 2004 Trans Tech Publications, Switzerland New Cu-based Bulk Metallic

More information

Optimization in Spheroidized Annealing of Two AISI 1022 Low Carbon Steels Used in Bolt Industry

Optimization in Spheroidized Annealing of Two AISI 1022 Low Carbon Steels Used in Bolt Industry Proceedings of the 2 nd World Congress on Mechanical, Chemical, and Material Engineering (MCM'16) Budapest, Hungary August 22 23, 2016 Paper No. ICMIE 115 DOI: 10.11159/icmie16.115 Optimization in Spheroidized

More information

Optimization of Process Parameters of Pressure Die Casting using Taguchi Methodology

Optimization of Process Parameters of Pressure Die Casting using Taguchi Methodology Optimization of Process Parameters of Pressure Die using Taguchi Methodology Satish Kumar, Arun Kumar Gupta, Pankaj Chandna Abstract The present work analyses different parameters of pressure die casting

More information

Contribution to the knowledge of the Cu Sn Zn system for compositions close to brass alloys

Contribution to the knowledge of the Cu Sn Zn system for compositions close to brass alloys Journal of Alloys and Compounds 379 (2004) 161 165 Contribution to the knowledge of the Cu Sn Zn system for compositions close to brass alloys C. Vilarinho, D. Soares, F. Castro University of Minho, Azurém,

More information

PROPERTIES OF EN AW-2024 WROUGHT ALUMINUM ALLOY AFTER CASTING WITH CRYSTALLIZATION UNDER PRESSURE

PROPERTIES OF EN AW-2024 WROUGHT ALUMINUM ALLOY AFTER CASTING WITH CRYSTALLIZATION UNDER PRESSURE PROPERTIES OF EN AW-2024 WROUGHT ALUMINUM ALLOY AFTER CASTING WITH CRYSTALLIZATION UNDER PRESSURE Branislav Vanko 1, Ladislav Stanček 1, Michal Čeretka 1, Eduard Sedláček 1, Roman Moravčík 2 1 Institute

More information

An Induction Heating Process with Coil Design and Solutions Avoiding Coarsening Phenomena of Al-6 Pct Si-3 Pct Cu-0.3 Pct Mg Alloy for Thixoforming

An Induction Heating Process with Coil Design and Solutions Avoiding Coarsening Phenomena of Al-6 Pct Si-3 Pct Cu-0.3 Pct Mg Alloy for Thixoforming An Induction Heating Process with Coil Design and Solutions Avoiding Coarsening Phenomena of Al-6 Pct Si-3 Pct Cu-0.3 Pct Mg Alloy for Thixoforming H.K. JUNG and C.G. KANG During the thixoforming process,

More information

Mohammad Anwar Karim Id :

Mohammad Anwar Karim Id : Department of Mechanical and Industrial Engineering ME 8109 Casting and Solidification of Materials EFFECTS OF RAPID SOLIDIFICATION ON MICROSTRUCTURE AND PROPERTIES OF AL, MG & TI ALLOYS Winter 2012 Presented

More information

OF ALLOY 718 DURING VACUUM ARC REMELTING WITH HELIUM GAS COOLING BETWEEN INGOT AND CRUCIBLE. L. G. Hosamani, W. E. Wood* and J. H.

OF ALLOY 718 DURING VACUUM ARC REMELTING WITH HELIUM GAS COOLING BETWEEN INGOT AND CRUCIBLE. L. G. Hosamani, W. E. Wood* and J. H. SOLIDIFICATION OF ALLOY 718 DURING VACUUM ARC REMELTING WITH HELIUM GAS COOLING BETWEEN INGOT AND CRUCIBLE L. G. Hosamani, W. E. Wood* and J. H. Devletian* Precision Castparts Corp., Portland, Oregon *

More information

Lap Joint of A5083 Aluminum Alloy and SS400 Steel by Friction Stir Welding

Lap Joint of A5083 Aluminum Alloy and SS400 Steel by Friction Stir Welding Materials Transactions, Vol. 46, No. 4 (2005) pp. 835 to 841 #2005 The Japan Institute of Metals Lap Joint of A5083 Aluminum Alloy and SS400 Steel by Friction Stir Welding Kittipong Kimapong* and Takehiko

More information

Demand for high profits and low costs. Short Communication Development of a large ingot continuous caster. & Technology. Metallurgical Research

Demand for high profits and low costs. Short Communication Development of a large ingot continuous caster. & Technology. Metallurgical Research Metall. Res. Technol. 112, 203 (2015) c EDP Sciences, 2015 DOI: 10.1051/metal/2015006 www.metallurgical-research.org Metallurgical Research & Technology Short Communication Development of a large ingot

More information

COMPUTER SIMULATION AND EXPERIMENTAL RESEARCH OF CAST PISTON POROSITY

COMPUTER SIMULATION AND EXPERIMENTAL RESEARCH OF CAST PISTON POROSITY Tome V (year 2007), Fascicole 2, (ISSN 1584 2665) COMPUTER SIMULATION AND EXPERIMENTAL RESEARCH OF CAST PISTON POROSITY D. KAKAS, L. KOVACEVIC, P. TEREK UNIVERSITY OF NOVI SAD, FACULTY OF TECHNICAL SCIENCES,

More information

Freckle Formation and Thermodynamic Assessment for Nb-bearing Superalloys

Freckle Formation and Thermodynamic Assessment for Nb-bearing Superalloys Freckle Formation and Thermodynamic Assessment for Nb-bearing Superalloys Zhengdong Long, Wanhong Yang, Keh-Minn Chang Dept. of Mechanical and Aerospace Engineering, West Virginia University PO Box 6106,

More information

Microstructural Evolution of Ti-Mo-Ni-C Powder by Mechanical Alloying

Microstructural Evolution of Ti-Mo-Ni-C Powder by Mechanical Alloying Materials Transactions, Vol. 50, No. 1 (2009) pp. 117 to 122 #2009 The Japan Institute of Metals Microstructural Evolution of -Mo-Ni-C Powder by Mechanical Alloying Hiroyuki Hosokawa, Kiyotaka Kato, Koji

More information

STUDIES ON MICROSTRUCTUREAND MECHANICAL PROPERTIES OFMODIFIED LM25 ALUMINIUM ALLOY

STUDIES ON MICROSTRUCTUREAND MECHANICAL PROPERTIES OFMODIFIED LM25 ALUMINIUM ALLOY STUDIES ON MICROSTRUCTUREAND MECHANICAL PROPERTIES OFMODIFIED LM25 ALUMINIUM ALLOY Venkatachalam G 1, Kumaravel A 2,Arun Kumar N 3, Dhanasekaran Rajagopal 4 1,2,4 Department of Mechanical Engineering,

More information

Rapid solidification behavior of Zn-rich Zn Ag peritectic alloys

Rapid solidification behavior of Zn-rich Zn Ag peritectic alloys Acta Materialia 50 (2002) 183 193 www.elsevier.com/locate/actamat Rapid solidification behavior of Zn-rich Zn Ag peritectic alloys W. Xu 1, Y.P. Feng 2,Y.Li 1,*, G.D. Zhang 3, Z.Y. Li 3 1 Department of

More information

The Effect of Si Content on the Size of β-al 5 FeSi Intermetallics in Al-Si- Cu-Mg Casting Alloys

The Effect of Si Content on the Size of β-al 5 FeSi Intermetallics in Al-Si- Cu-Mg Casting Alloys Proceedings of the 9 th International Conference on Aluminium Alloys (2004) 1216 Edited by J.F. Nie, A.J. Morton and B.C. Muddle Institute of Materials Engineering Australasia Ltd The Effect of Si Content

More information

Assessment of modification level of hypoeutectic Al -Si alloys by pattern recognition of cooling curves

Assessment of modification level of hypoeutectic Al -Si alloys by pattern recognition of cooling curves Assessment of modification level of hypoeutectic Al -Si alloys by pattern recognition of cooling curves *CHEN Xiang, GENG Hui-yuan, LI Yan-xiang (Department of Mechanical Engineering, Key Laboratory for

More information

Simulation Studies on Sand Cast LM25 Aluminium Metal Matrix Composites

Simulation Studies on Sand Cast LM25 Aluminium Metal Matrix Composites Simulation Studies on Sand Cast LM25 Aluminium Metal Matrix Composites 1 Jagadeesh. S.K., Sathish. S., Krishnaraj, U.N., Department of Mechanical Engineering, Dr. Ambedkar Institute of Technology, Bangalore-560056

More information

Phase field simulation of the columnar dendritic growth and microsegregation in a binary alloy

Phase field simulation of the columnar dendritic growth and microsegregation in a binary alloy Vol 17 No 9, September 28 c 28 Chin. Phys. Soc. 1674-156/28/17(9)/3516-7 Chinese Physics B and IOP Publishing Ltd Phase field simulation of the columnar dendritic growth and microsegregation in a binary

More information

Microstructure and Vacuum Leak Characteristics of SiC coating Layer by Three Different Deposition Methods

Microstructure and Vacuum Leak Characteristics of SiC coating Layer by Three Different Deposition Methods Microstructure and Vacuum Leak Characteristics of SiC coating Layer by Three Different Deposition Methods Y. Kim Professor, Department of Materials Science and Engineering, College of Engineering, Kyonggi

More information

Characterization of Coatings on Grey Cast Iron Fabricated by Hot-dipping in Pure Al, AlSi11 and AlTi5 Alloys

Characterization of Coatings on Grey Cast Iron Fabricated by Hot-dipping in Pure Al, AlSi11 and AlTi5 Alloys A R C H I V E S o f F O U N D R Y E N G I N E E R I N G Published quarterly as the organ of the Foundry Commission of the Polish Academy of Sciences ISSN (1897-3310) Volume 14 Issue 1/2014 85 90 20/1 Characterization

More information

Numerical modelling of the solidification of ductile iron

Numerical modelling of the solidification of ductile iron Journal of Crystal Growth 191 (1998) 261 267 Numerical modelling of the solidification of ductile iron J. Liu*, R. Elliott Manchester Materials Science Centre, University of Manchester, Grosvenor Street,

More information

Effect of Stacking Fault Energy on Evolution of Recrystallization Textures in Drawn Wires and Rolled Sheets

Effect of Stacking Fault Energy on Evolution of Recrystallization Textures in Drawn Wires and Rolled Sheets Materials Science Forum Vols. 495-497 (2005) pp. 1243-1248 online at http://www.scientific.net 2005 Trans Tech Publications, Switzerland 194 Effect of Stacking Fault Energy on Evolution of Recrystallization

More information

Effect of Magnesium Addition on Microstructure and Mechanical Properties of Lead-Free Zinc-Silver Solder Alloys

Effect of Magnesium Addition on Microstructure and Mechanical Properties of Lead-Free Zinc-Silver Solder Alloys Effect of Magnesium Addition on Microstructure and Mechanical Properties of Lead-Free Zinc-Silver Solder Alloys Md. Anisul Islam * and Ahmed Sharif Department of Materials and Metallurgical Engineering,

More information

Lecture 6: Solidification of Single Phase Alloys

Lecture 6: Solidification of Single Phase Alloys Lecture 6: Solidification of Single Phase Alloys 1 Zone Melting Process of zone melting: Start with a solid alloy bar with uniform cross-section. Place the bar horizontally. Only melt the bar within a

More information

MICROSTRUCTURE EVOLUTION DURING DIRECTIONAL SOLIDIFICATION OF INTERMETALLIC Ti-45.9Al-8Nb ALLOY. Z. Gabalcová J. Lapin

MICROSTRUCTURE EVOLUTION DURING DIRECTIONAL SOLIDIFICATION OF INTERMETALLIC Ti-45.9Al-8Nb ALLOY. Z. Gabalcová J. Lapin MICROSTRUCTURE EVOLUTION DURING DIRECTIONAL SOLIDIFICATION OF INTERMETALLIC Ti-45.9Al-8Nb ALLOY Z. Gabalcová J. Lapin Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Račianska

More information

MICROSTUCTURE OF CAST TITANIUM ALLOYS

MICROSTUCTURE OF CAST TITANIUM ALLOYS MATERIALS FORUM VOLUME 31-2007 Edited by J.M. Cairney and S.P. Ringer Institute of Materials Engineering Australasia MICROSTUCTURE OF CAST TITANIUM ALLOYS M.J. Bermingham, S.D. McDonald, M.S. Dargusch,

More information

Influence of Shielding Gas on Aluminum Alloy 5083 in Gas Tungsten Arc Welding

Influence of Shielding Gas on Aluminum Alloy 5083 in Gas Tungsten Arc Welding Available online at www.sciencedirect.com Procedia Engineering 29 (2012) 2465 2469 2012 International Workshop on Information and Electronics Engineering (IWIEE) Influence of Shielding Gas on Aluminum

More information

Nanocrystalline structure and Mechanical Properties of Vapor Quenched Al-Zr-Fe Alloy Sheets Prepared by Electron-Beam Deposition

Nanocrystalline structure and Mechanical Properties of Vapor Quenched Al-Zr-Fe Alloy Sheets Prepared by Electron-Beam Deposition Materials Transactions, Vol. 44, No. 10 (2003) pp. 1948 to 1954 Special Issue on Nano-Hetero Structures in Advanced Metallic Materials #2003 The Japan Institute of Metals Nanocrystalline structure and

More information

World Academy of Science, Engineering and Technology International Journal of Materials and Metallurgical Engineering Vol:8, No:4, 2014

World Academy of Science, Engineering and Technology International Journal of Materials and Metallurgical Engineering Vol:8, No:4, 2014 Optimization of Artificial Ageing Time and Temperature on Evaluation of Hardness and Resistivity of Al-Si-Mg (Cu or/& Ni) Alloys A. Hossain, A. S. W. Kurny Abstract The factors necessary to obtain an optimal

More information

J = D C A C B x A x B + D C A C. = x A kg /m 2

J = D C A C B x A x B + D C A C. = x A kg /m 2 1. (a) Compare interstitial and vacancy atomic mechanisms for diffusion. (b) Cite two reasons why interstitial diffusion is normally more rapid than vacancy diffusion. (a) With vacancy diffusion, atomic

More information

Effect of Low Feed Rate FSP on Microstructure and Mechanical Properties of Extruded Cast 2285 Aluminum Alloy

Effect of Low Feed Rate FSP on Microstructure and Mechanical Properties of Extruded Cast 2285 Aluminum Alloy 614 J. Mater. Sci. Technol., Vol.23 No.5, 2007 Effect of Low Feed Rate FSP on Microstructure and Mechanical Properties of Extruded Cast 2285 Aluminum Alloy L.Karthikeyan 1), V.S.Senthilkumar 2), D.Viswanathan

More information

Experiment A: Solidification and Casting

Experiment A: Solidification and Casting Experiment A: Solidification and Casting Introduction: The purpose of this experiment is to introduce students to the concepts of solidification and to study the development of solidification microstructures.

More information

Parametric Optimization of Electric Discharge Drilling Machine Using Al-SiC Metal Matrix Composite

Parametric Optimization of Electric Discharge Drilling Machine Using Al-SiC Metal Matrix Composite Parametric Optimization of Electric Discharge Drilling Machine Using Al-SiC Metal Matrix Composite S.Vijaya Kumar Email: vijaisuriyaa2010@gmail.com +91-9629723720 C.Srinivasan Email: srinime89@gmail.com

More information

CHAPTER 9 PHASE DIAGRAMS

CHAPTER 9 PHASE DIAGRAMS CHAPTER 9 PHASE DIAGRAMS PROBLEM SOLUTIONS 9.14 Determine the relative amounts (in terms of mass fractions) of the phases for the alloys and temperatures given in Problem 9.8. 9.8. This problem asks that

More information

SIMULATION OF DIFFUSIONAL PROCESSES DURING SOLIDIFICATION IN AUSTENITIC STEELS

SIMULATION OF DIFFUSIONAL PROCESSES DURING SOLIDIFICATION IN AUSTENITIC STEELS Abstract SIMULATION OF DIFFUSIONAL PROCESSES DURING SOLIDIFICATION IN AUSTENITIC STEELS D. Baldissin*, L. Battezzati, Dipartimento di Chimica IFM e Centro di Eccellenza NIS, Università di Torino, Via P.

More information

Effects of Austenite Conditioning on Austenite/Ferrite Phase Transformation of HSLA Steel

Effects of Austenite Conditioning on Austenite/Ferrite Phase Transformation of HSLA Steel Materials Transactions, Vol. 45, No. 1 (2004) pp. 137 to 142 #2004 The Japan Institute of Metals EXPRESS REGULAR ARTICLE Effects of Austenite Conditioning on Austenite/Ferrite Phase Transformation of HSLA

More information

Effect of Precipitation on Development of Recrystallization Texture in a 6061 Aluminum Alloy

Effect of Precipitation on Development of Recrystallization Texture in a 6061 Aluminum Alloy Materials Transactions, Vol. 50, No. 3 (2009) pp. 528 to 536 #2009 The Japan Institute of Light Metals Effect of Precipitation on Development of Recrystallization Texture in a 6061 Aluminum Alloy K. Kashihara

More information

Effect of The Pressure of the Squeeze Process on the Hardness and Micro Structure of Recycled Aluminum Materials

Effect of The Pressure of the Squeeze Process on the Hardness and Micro Structure of Recycled Aluminum Materials JOURNAL OF MECHANICAL SCIENCE AND ENGINEERING Vol.1 No.1 October 2013 Taufikurrahman a, * Nukman b M. Yanis b a Student of Master Program Mechanical Engineering, Sriwijaya University a Lecture of Master

More information

Phase Diagrams of Pure Substances Predicts the stable phase as a function of P total and T. Example: water can exist in solid, liquid and vapor

Phase Diagrams of Pure Substances Predicts the stable phase as a function of P total and T. Example: water can exist in solid, liquid and vapor PHASE DIAGRAMS Phase a chemically and structurally homogenous region of a material. Region of uniform physical and chemical characteristics. Phase boundaries separate two distinct phases. A single phase

More information

Development and Characterization of Functionally Gradient Al Si Alloy Using Cast-Decant-Cast Process

Development and Characterization of Functionally Gradient Al Si Alloy Using Cast-Decant-Cast Process DOI 10.1007/s12666-015-0527-7 TECHNICAL PAPER Development and Characterization of Functionally Gradient Al Si Alloy Using Cast-Decant-Cast Process B. Anandavel S. S. Mohamed Nazirudeen J. Anburaj P. C.

More information

REAL-TIME RADIOGRAPHY AND MODELING OF POROSITY FORMATION IN AN A356 ALUMINUM ALLOY WEDGE CASTING

REAL-TIME RADIOGRAPHY AND MODELING OF POROSITY FORMATION IN AN A356 ALUMINUM ALLOY WEDGE CASTING Shape Casting: 6th International Symposium Edited by: Murat Tiryakioǧlu, Mark Jolly, and Glenn Byczynski TMS (The Minerals, Metals & Materials Society), 2016 REAL-TIME RADIOGRAPHY AND MODELING OF POROSITY

More information

Control of Microstructure during Solidification & Homogenization of Thin-Slab Cast Direct-Rolling (TSCDR) Microalloyed Steels

Control of Microstructure during Solidification & Homogenization of Thin-Slab Cast Direct-Rolling (TSCDR) Microalloyed Steels Control of Microstructure during Solidification & Homogenization of Thin-Slab Cast Direct-Rolling (TSCDR) Microalloyed Steels Tihe (Tom) Zhou Supervisors: Dr. Hatem. S. Zurob, Dr. Nikolas. Provatas February

More information

Modelling and Optimization for Heat Treatment of Al-Si-Mg Alloy Prepared by Indirect Squeeze Casting Based on Response Surface Methodology

Modelling and Optimization for Heat Treatment of Al-Si-Mg Alloy Prepared by Indirect Squeeze Casting Based on Response Surface Methodology Materials Research. 017; 0(5): 17-181 017 DOI: http://dx.doi.org/10.1590/1980-5373-mr-017-0300 Modelling and Optimization for Heat Treatment of Al-Si-Mg Alloy Prepared by Indirect Squeeze Casting Based

More information

Ageing behavior of Al 4.5 wt% Cu matrix alloy reinforced with Al 2 O 3 and ZrSiO 4 particulate varying particle size

Ageing behavior of Al 4.5 wt% Cu matrix alloy reinforced with Al 2 O 3 and ZrSiO 4 particulate varying particle size J Mater Sci (2006) 41:5402 5406 DOI 10.1007/s10853-006-0243-0 LETTER Ageing behavior of Al 4.5 wt% Cu matrix alloy reinforced with Al 2 O 3 and ZrSiO 4 particulate varying particle size Sanjeev Das Æ S.

More information

Optimization of Riser size of Aluminium alloy (LM6) castings by using conventional method and computer simulation technique

Optimization of Riser size of Aluminium alloy (LM6) castings by using conventional method and computer simulation technique International Journal Of Scientific & Engineering Research, Volume 2, Issue 11, November-2011 1 Optimization of Riser size of Aluminium alloy (LM6) castings by using conventional method and computer simulation

More information

Comparison of Properties of Extruded 6xxx Alloys in T5 Temper versus T6 Temper

Comparison of Properties of Extruded 6xxx Alloys in T5 Temper versus T6 Temper Proceedings of the 9 th International Conference on Aluminium Alloys (2004) Edited by J.F. Nie, A.J. Morton and B.C. Muddle Institute of Materials Engineering Australasia Ltd 300 Comparison of Properties

More information

CFD MODELLING OF MACRO-SEGREGATION AND SHRINKAGE IN LARGE DIAMETER STEEL ROLL CASTINGS: A COMPARISON ON SEN AND DLP TECHNIQUES

CFD MODELLING OF MACRO-SEGREGATION AND SHRINKAGE IN LARGE DIAMETER STEEL ROLL CASTINGS: A COMPARISON ON SEN AND DLP TECHNIQUES Ninth International Conference on CFD in the Minerals and Process Industries CSIRO, Melbourne, Australia 10-12 December 2012 CFD MODELLING OF MACRO-SEGREGATION AND SHRINKAGE IN LARGE DIAMETER STEEL ROLL

More information

Objective To study the time and temperature variations in the hardness of Al-4% Cu alloy on isothermal aging.

Objective To study the time and temperature variations in the hardness of Al-4% Cu alloy on isothermal aging. EXPERIMENT 8 PRECIPITATION HARDENING IN 2024 ALUMINUM Objective To study the time and temperature variations in the hardness of Al-4% Cu alloy on isothermal aging. Introduction Materials can be hardened

More information

TAGUCHI BASED OPTIMIZATION OF CUTTING PARAMETERS ALUMINIUM ALLOY 6351 USING CNC

TAGUCHI BASED OPTIMIZATION OF CUTTING PARAMETERS ALUMINIUM ALLOY 6351 USING CNC TAGUCHI BASED OPTIMIZATION OF CUTTING PARAMETERS ALUMINIUM ALLOY 6351 USING CNC Mahendra Singh 1, Amit Sharma 2, Deepak Juneja 3, Anju Chaudhary 4 1 Assistant Professor, Department of Mechanical Engg,

More information

Water mist effect on cooling process of casting die and microstructure of AlSi9 alloy

Water mist effect on cooling process of casting die and microstructure of AlSi9 alloy A R C H I V E S of F O U N D R Y E N G I N E E R I N G Published quarterly as the organ of the Foundry Commission of the Polish Academy of Sciences ISSN (1897-331) Volume 1 Issue 2/21 185 194 33/2 Water

More information

Comparative study of forging parameters on microstructures and properties between Aluminum alloys Al6063 and Al7075

Comparative study of forging parameters on microstructures and properties between Aluminum alloys Al6063 and Al7075 Proceedings of the 5th IASME/WSEAS Int. Conference on Heat Transfer, Thermal Engineering and Environment, Athens, Greece, August 5-7, 007 09 Comparative study of forging parameters on microstructures and

More information

Development of creep-resistant magnesium casting alloys for high temperature automotive applications

Development of creep-resistant magnesium casting alloys for high temperature automotive applications High Performance Structures and Materials IV 53 Development of creep-resistant magnesium casting alloys for high temperature automotive applications L. Han, H. Hu & D. O. Northwood Department of Mechanical,

More information

Effect of Charge Materials on Slag Formation in Ductile Iron Melts

Effect of Charge Materials on Slag Formation in Ductile Iron Melts Effect of Charge Materials on Slag Formation in Ductile Iron Melts C. Labrecque, M. Gagné and E. Planque Rio Tinto Iron & Titanium Inc. Sorel-Tracy, Quebec, Canada ABSTRACT The formation of an oxide slag

More information

International Conference on Material Science and Application (ICMSA 2015)

International Conference on Material Science and Application (ICMSA 2015) International Conference on Material Science and Application (ICMSA 2015) Influence of Er on Microstructure and Properties of Al-0.2%Zr-0.06%B Heat-resistant Alloy Conductor Prepared by Continuous ECAE

More information

Menghani, Jyoti1; Bhushan, Bharat1; Singh, Balraj1; Suthat, Deepak1; Shah, Dimple1 SVNIT Surat,India

Menghani, Jyoti1; Bhushan, Bharat1; Singh, Balraj1; Suthat, Deepak1; Shah, Dimple1 SVNIT Surat,India Menghani, Jyoti1; Bhushan, Bharat1; Singh, Balraj1; Suthat, Deepak1; Shah, Dimple1 SVNIT Surat,India Aluminum, magnesium alloys and plastics have received growing attentions as light-weight materials for

More information

FRACTURE STRENGTH EVALUATION OF SEMICONDUCTOR SILICON WAFERING PROCESS INDUCED DAMAGE

FRACTURE STRENGTH EVALUATION OF SEMICONDUCTOR SILICON WAFERING PROCESS INDUCED DAMAGE FRACTURE STRENGTH EVALUATION OF SEMICONDUCTOR SILICON WAFERING PROCESS INDUCED DAMAGE Seong-Min Jeong 1), Sung-Eun Park 1), Han-Seog Oh 1)), Hong-Lim Lee 1) 1) Department of Ceramic Engineering, Yonsei

More information

THE INFLUENCE OF CASTING GEOMETRY ON THE TENSILE PROPERTIES AND RESIDUAL STRESSES IN ALUMIUM CASTINGS

THE INFLUENCE OF CASTING GEOMETRY ON THE TENSILE PROPERTIES AND RESIDUAL STRESSES IN ALUMIUM CASTINGS Materials Science Forum Vol. 652 (21) pp 174-179 Online: 21-5-2 (21) Trans Tech Publications, Switzerland doi:1.428/www.scientific.net/msf.652.174 THE INFLUENCE OF CASTING GEOMETRY ON THE TENSILE PROPERTIES

More information

Resistivity Evolution with Temperature of 7050 Aluminium Alloy in Different Casting Methods

Resistivity Evolution with Temperature of 7050 Aluminium Alloy in Different Casting Methods Materials Transactions, Vol. 49, No. 10 (08) pp. 2283 to 2287 #08 The Japan Institute of Metals Resistivity Evolution with Temperature of 7050 Aluminium Alloy in Different Casting Methods Chunyan Ban*

More information

ANALYSIS OF STRAY GRAIN FORMATION IN SINGLE-CRYSTAL NICKEL-BASED SUPERALLOY WELDS

ANALYSIS OF STRAY GRAIN FORMATION IN SINGLE-CRYSTAL NICKEL-BASED SUPERALLOY WELDS Superalloys 2004 Edited by K.A. Green, T.M. Pollock, H. Harada, T.E. Howson, R.C. Reed, J.J. Schirra, and S, Walston TMS (The Minerals, Metals & Materials Society), 2004 ANALYSIS OF STRAY GRAIN FORMATION

More information

Rajiv Suman 1, Dr. P.C.Gope 2 1 Research Scholar, Department of mechanical Engineering, College of Technology. Pantnagar (GBPUAT) Uttarakhand,INDIA

Rajiv Suman 1, Dr. P.C.Gope 2 1 Research Scholar, Department of mechanical Engineering, College of Technology. Pantnagar (GBPUAT) Uttarakhand,INDIA Microstructure and Mechanical Property Changes during TIG elding of 31-2 (IS-737) Aluminium Alloy Rajiv Suman 1, Dr. P.C.Gope 2 1 Research Scholar, Department of mechanical Engineering, College of Technology.

More information

ETA PHASE FORMATION DURING THERMAL EXPOSURE AND ITS EFECT ON MECHANICAL PROPERTIES IN NI-BASE SUPERALLOY GTD 111

ETA PHASE FORMATION DURING THERMAL EXPOSURE AND ITS EFECT ON MECHANICAL PROPERTIES IN NI-BASE SUPERALLOY GTD 111 Superalloys 2004 Edited by K.A. Green, T.M. Pollock, H. Harada, T.E. Howson, R.C. Reed, J.J. Schirra, and S, Walston TMS (The Minerals, Metals & Materials Society), 2004 ETA PHASE FORMATION DURING THERMAL

More information

Brazing of copper to stainless steel with a lowsilver-content

Brazing of copper to stainless steel with a lowsilver-content IOP Conference Series: Materials Science and Engineering OPEN ACCESS Brazing of copper to stainless steel with a lowsilver-content brazing filler metal To cite this article: Tatsuya Fukikoshi et al 2014

More information

The Treatment of Liquid Aluminium-Silicon Alloys. Topics to discuss

The Treatment of Liquid Aluminium-Silicon Alloys. Topics to discuss MME 6203; Lecture 15 The Treatment of Liquid Aluminium-Silicon Alloys 3. Modification in Hypereutectic Alloys and Grain Refining AKMB Rashid Department of MME BUET, Dhaka Topics to discuss 1. Refinement

More information

Principals of Billet Making

Principals of Billet Making Billet quality directly controls the quality of extrusions and affects productivity, in term profitability. The quality of billets& cost are the two important considerations for extrusion producers. Day

More information

Induction Skull Melting Furnaces

Induction Skull Melting Furnaces Induction Skull Melting Furnaces ISM The Process A B C D Induction Skull Melting ISM is a method of melting metals in a segmented, water-cooled copper vessel while under vacuum or controlled atmosphere

More information

Mater. Res. Soc. Symp. Proc. Vol Materials Research Society

Mater. Res. Soc. Symp. Proc. Vol Materials Research Society Mater. Res. Soc. Symp. Proc. Vol. 993 2007 Materials Research Society 0993-E03-01 Dissolution Kinetics of Nickel in Lead-Free Sn-Bi-In-Zn-Sb Soldering Alloys Katayun Barmak 1, David C. Berry 1, Vira G.

More information

LAB IV. Effects of Heat Treatment on Steel, Aluminum and Brass Alloys - Microstructure and Properties

LAB IV. Effects of Heat Treatment on Steel, Aluminum and Brass Alloys - Microstructure and Properties LAB IV Effects of Heat Treatment on Steel, Aluminum and Brass Alloys - Microstructure and Properties PRE LAB PREPARATION (required!) 1. Using the ASM metal handbooks or other resources find and print/copy

More information

Analysis of the Intermetallic Compound Formed in Hot Dip Aluminized Steel

Analysis of the Intermetallic Compound Formed in Hot Dip Aluminized Steel Advanced Materials Research Vols. 15-17 (2007) pp. 159-163 online at http://www.scientific.net (2007) Trans Tech Publications, Switzerland Analysis of the Intermetallic Compound Formed in Hot Dip Aluminized

More information

The influence of Mg 17 Al 12 phase volume fraction on the corrosion behaviour of AZ91 magnesium alloy. Andrzej Kiełbus* and Grzegorz Moskal

The influence of Mg 17 Al 12 phase volume fraction on the corrosion behaviour of AZ91 magnesium alloy. Andrzej Kiełbus* and Grzegorz Moskal 196 Int. J. Microstructure and Materials Properties, Vol. 4, No. 2, 2009 The influence of Mg 17 Al 12 phase volume fraction on the corrosion behaviour of AZ91 magnesium alloy Andrzej Kiełbus* and Grzegorz

More information

PECULIARITIES OF USING HEREDITARY PROPERTIES OF MELTING STOCK WITH HIGH IRON CONTENT TO OBTAIN HIGH QUALITY AL-SI CASTING ALLOY

PECULIARITIES OF USING HEREDITARY PROPERTIES OF MELTING STOCK WITH HIGH IRON CONTENT TO OBTAIN HIGH QUALITY AL-SI CASTING ALLOY PECULIARITIES OF USING HEREDITARY PROPERTIES OF MELTING STOCK WITH HIGH IRON CONTENT TO OBTAIN HIGH QUALITY AL-SI CASTING ALLOY Y. Dotsenko 1, V. Selivorstov 1, K. Borodianskiy 2, M. Zinigrad 2 1 Electrometallurgical

More information

Metal Casting. Manufacturing Processes for Engineering Materials, 5th ed. Kalpakjian Schmid 2008, Pearson Education ISBN No.

Metal Casting. Manufacturing Processes for Engineering Materials, 5th ed. Kalpakjian Schmid 2008, Pearson Education ISBN No. Metal Casting Important factors in casting Solidification of the metal from its molten state and accompanying shrinkage Flow of the molten metal into the mold cavity Heat transfer during solidification

More information

Arch. Metall. Mater. 62 (2017), 2B,

Arch. Metall. Mater. 62 (2017), 2B, Arch. Metall. Mater. 62 (2017), 2B, 1225-1229 DOI: 10.1515/amm-2017-0182 S.S. KIM*, I. SON* #, K.T. KIM** EFFECT OF ELECTROLESS Ni P PLATING ON THE BONDING STRENGTH OF Bi Te-BASED THERMOELECTRIC MODULES

More information

V 1 m/min. V max (press) V 1 max. Temperature C. Arch. Metall. Mater., Vol. 61 (2016), No 1, p Introduction

V 1 m/min. V max (press) V 1 max. Temperature C. Arch. Metall. Mater., Vol. 61 (2016), No 1, p Introduction Arch. Metall. Mater., Vol. 61 (2016), No 1, p. 85 92 DOI: 10.1515/amm-2016-0010 D. Leśniak*,#, M. Dziki*, J. Zasadziński*, W. Libura* Influence of Mg content on deformability of AlMg alloys during extrusion

More information