Abstract. 1. Introduction. 2. Materials and methods. Warsaw, Poland. * Corresponding Author:
|
|
- Julius Morrison
- 6 years ago
- Views:
Transcription
1 March 16, Berlin / GER The Novel Scanning Strategy For Fabrication Metallic Glasses By Selective Laser Melting Łukasz Żrodowski* 1, Bartłomiej Wysocki 1, Rafał Wróblewski 1, Krzysztof Jan Kurzydłowski 1, Wojciech Święszkowski 1 1 Warsaw University of Technology, Faculty of Materials Science and Engineering, Woloska 141 St., Warsaw, Poland * Corresponding Author: lukasz.zrodowski@gmail.com Abstract Metallic Glasses (MGs) can be described as a stable in the room temperature metallic materials with a disordered liquid-like structure produced during rapid cooling of a molten alloy. Due to the limited Glass Forming Ability (GFA), most of the MGs are produced as a thin ribbons through melt-spinning or as a fine powder during atomization processes. Certain multicomponent alloys with exceptionally high GFA, known as Bulk Metallic Glasses (BMGs), can retain disordered structure during copper-mold casting. The size and the complexity of objects produced in a such way is limited by the critical cooling rate. Additive Manufacturing (AM) methods like Selective Laser Melting (SLM) have been shown in a few studies as very perspective for producing BMGs without such limitations. In this work Realizer SLM-50, a desktop SLM machine, was used to selectively melt Kuamet52 Fe-Si-B-Cr-C metallic glass powder with various laser parameters. Material was rescanned with high power density and a novel Pulse-Random (P-R) strategy to achieve high content of glassy phase, despite low GFA of the alloy. Optical Microscopy (OM) was used to preliminary determine material structure. Amorphous structure was confirmed by the Differential Scanning Calorimetry (DSC) while residual crystalline phases were identified by the X-Ray Diffraction (XRD). Microstructural observations revealed, after the first melting in conduction mode, mostly crystalline phases made in samples. After the second melting in key-hole mode, which was performed with P-R strategy, there was observed great increase of amorphous phase content. Samples fabricated with new scanning strategies had amorphisation degree exceeding 60%, with retained α-fe 3 Si and FeB 2 crystalline phases. Model of the laser melted MGs crystallization, focused on devitrification during laser heating in Heat Affected Zone (HAZ), has been proposed to explain observed phenomena. 1. Introduction Due to exceptional mechanical and chemical properties Metallic Glasses (MGs) are promising structural [1] and bio materials [2,3], but the high cost of advanced molding systems and technical difficulties still limit their applications. The solution for enhancing the applicability of metallic glasses is processing them by Additive Manufacturing (AM) methods. Selective Laser Melting (SLM) drew attention as a suitable method for processing amorphous alloys due to the cooling rates higher than these needed for amorphisation of various MGs. Recently, a few examples where amorphous structure has been achieved via this technique were published [4,5]. Still alloys used in those experiments have exceptionally high Glass Forming Ability (GFA) and they can be produced in bulk form and casted into copper mold. Another example showed that MGs with lower GFA induces severe crystallization during the process [6]. Especially Heat Affected Zone (HAZ) between layers or melt pools are sensitive to crystallization caused by accumulation of structural relaxation [7]. In this work, we have sucesfully selectively laser melted Fe-based metallic glass with low GFA using various laser parameters. The introduced Pulse-Random (P-R) remelting strategy reduced influence of the heat accumulation and increased Amorphisation Degree (AD). The new crystallization model for SLM processing of MGs, based on Ozawa equation [8], has been proposed. 2. Materials and methods The commercial amorphous powder Kuamet 52 (Atmix-Epson, Japan) with the nominal composition: Fe 71 Si 10 B 11 C 6 Cr 2 and mean diameter 24.5 µm has been used in the experiment. Cylindrical samples of the 5 mm diameter and 5 mm height were produced with constant layer thickness of 50 µm using SLM-50 (Realizer GmbH) desktop machine for manufacturing metal components. Each layer during the samples fabrication was scanned two times. During the first melting there was used checkerboard strategy with 1 mm edge length and the laser power W. The second melting was made with the P-R strategy and maximum laser power W. The detailed set of the parameters is summarized in Table 1. Minimum distance between subsequent points during the P-R strategy was set to 1 mm. Scheme of the P-R strategy is shown in Fig. 1. Two sets of samples, with and without the remelting, ISBN Fraunhofer / DDMC 16 1
2 March 16, Berlin / GER were created to show the influence of remelting strategy. The Scanning Electron Microscope (SEM) observations of the powder were performed using HITACHI S3500 microscope. In order to prepare the metallographic sections, samples were cut in the middle perpendicularly to the base plate using wire Electro Discharge Machining (w-edm). After moulding in epoxy resin, samples were prepared by metallographic standard methods like grinding and polishing. Etching was performed with a solution composed of ml 98% ethanol, 10 ml 65% nitric acid, and ml of distilled water. The metallographic observations were performed using NIKON EPIPHOT 0 light microscope. The DSC analysis was performed for both initial powder and every sample ( mg in graphite crucible) using Perkin Perkin Elmer DSC 8000 with constant heating rate 40 K/min. The AD % was calculated as the crystallization enthalpy of the sample divided by the crystallization enthalpy of the powder. In order to determine the activation energy of the first crystallization step there was used Ozawa method [7]. For this purpose, initial powder peak crystallization temperature was measured at the heating rate β =, 40, 80, 160, and 3 K/min. The X-ray diffraction (XRD) was performed using Rigaku MiniFlex II diffractometer with Cu Kα X-Ray source on the initial powder, sample with the highest AD, and on the annealed powder (1123 K 1 h). The goniometer step was set to 0,01 with measurement time 5 s. The diffraction patterns were compared to standard PDF4+ database. 50 µm Figure 2: SEM image of Kuamet 52 powder a) Table 1: Laser parameters used during the first melting Sample A B C Exposure time [µs] P-R Point distance [µm] 65 Hatch distance [µm] 65 X Laser power [W] Energy density [J/mm3] b) Fig. 1. Fabrication scheme of one layer of a metallic glass with the novel scanning strategy; a) loose powder; b) first melting of loose power with checkerboard strategy; c) second melting of previously melted layer by random pulses numbers represent melting order; d) fully remelted layer after P-R scanning strategy ISBN c) Fig. 3. Etched cross sections of samples without remelting; a) Sample A, AD:13,2%; b) Sample B, AD:5,7%; c) Sample C, AD:3,6. Amorphous phases marked by arrows, crystalline phases marked as stars, pores marked as squares Fraunhofer / DDMC 16 2
3 March 16, Berlin / GER 3. Results and discussion The SEM images of the initial metallic glass powder are shown in Fig. 2. Most of the powder particles had a spherical or oval shape, together with a smooth and featureless surface, which explains a good powder processability. The microstructures of the single melted samples together with the DSC-measured AD values are shown in Fig. 3. The values of used laser parameters had influence on both porosity and AD of the fabricated samples. Increased exposure time or reduced point/hatch distance effected in the lower porosity but also in the lower AD. This effect was well visible between microstructures showed in Fig. 3a-c. The lower porosity of the samples B and C than A can be attributed to the higher energy density delivered to the material during the melting. The lower AD content in the samples B and C than A can be explained by increased heat shock effect in HAZ [7]. The metallographic cross-sections of samples, which layers were melted during the fabrication just once with checkboard strategy, consist mostly regions strongly etched by the chemical reagent (marked as stars). These dark etched regions were identified as the crystalline phase. In the contrast to the crystalline dark regions metallic glass could be observed as the bright non etched dots (marked by arrows). It should be denoted that, regardless of the used parameters, amorphous phase formed only separated melt pools around the pores and these regions were not connected through the layers. On the other hand the pores tended to protect amorphous melt pools from devitrification during subsequent layer melting. The different AD values and the melt pools morphology were observed on the samples fabricated when the second melting of each layer with the P-R strategy was performed (Fig. 4a-c). The AD values for all samples after remelting have increased approximately four times. The minor reduction of the porosity in comparison to the samples fabricated without remelting was also observed. Similarly to the samples fabricated without P-R remelting the sample A exhibited the highest AD, while the samples B and C had lower and almost equal AD. In the sample A the most amorphous melt pools were connected without crystallization in HAZ and their length exceed thickness of a few layers. a) b) c) Fig. 4. Etched cross sections of samples made with P-R remelting; a) Sample A, AD:62,3%; b) Sample B, AD:,7%; c) Sample C, AD:,6%. µm Amorphous phases marked by arrows, crystalline phases marked as stars, pores marked as squares Fig. 5. Microstructure of sample B after remelting; Melt pool after first scanning is marked with a rhombus; Melt pool after P-R is marked with a square ISBN Fraunhofer / DDMC 16 3
4 March 16, Berlin / GER The higher magnification of the remelted B sample is shown in Fig. 5. There can be observed two different types of melt pools: the crystalline and the amorphous melt pools with the different aspect ratio. The crystalline melt pools after the first melting were µm deep and 80-1 µm wide. The amorphous melt pools after the P-R strategy remelting were - 0 µm deep and µm wide. There was a little or no crystallization in the HAZ of the P-R melt pools. In the field of a laser processing change of a melt pool aspect ratio is well known as a result of the transition between the conduction melting and the key-hole melting modes. During a key-hole mode melting power density is high enough to vaporize a material and allow a laser beam to penetrate deeper inside it. In this experiment, key-hole mode melt pools were responsible for high AD values. On the contrary to the key-hole mode, just after the conduction mode the microstructure of samples did not consist of connected regions of Heat flow [a.u.] endo T r T x T p1 T p Temperature [ C] amorphous phase. Fig. 6. The XRD patterns for the annealed powder, the remelted A sample and the initial powder. Peaks marked with circle were identifed as α-fe 3 (Si) while with square as Fe 2 B The XRD patterns for the annealed powder, the remelted Sample A and the initial powder are shown in Fig. 6. There were no peaks on the XRD pattern of the initial powder, but only a wide amorphous hump, therefore initial powder was considered to be fully amorphous. The DSC calculations of the initial powder AD confirmed that result. The annealed powder had equilibibirum phase composition which was identified as α-fe 3 (Si) with addition of Fe 2 B. Due to the multicomponent composition of the alloy there were also other minor peaks of an unidentified phase or phases. The remelted Sample A was a halfway between the initial and the annealed powder. On the amorphous hump there were sharp peaks of α-fe 3 (Si) and barely distinguishable from background Fe 2 B peaks. No peaks shift was observed for annealed powder and the remelted Sample A, which excluded occurrence of stress concentration in the crystalline phase. Fig. 7. The DSC curve for the Sample A with remelting (upper line) and the initial powder (bottom line); T r - relaxation start; T x - crystalization temperature onset; T p1 - first crystallization stage peak temperature; T p2 - Second crystallization stage peak temperature The AD values for the all fabricated samples was calculated as the crystallization enthalpy of the sample divided by the crystallization enthalpy of the initial powder. The DSC curves for the amorphous powder and the remelted sample A are shown in Fig. 7. Both curves had the same character with weak exothermal effect visible at 351 C followed by two overlapping crystallization effects. Glass transition temperature is not visible for this alloy. For the initial powder and the remelted Sample A characteristic temperatures were: T x = 572 C, T p1 = 579 C, T p2 = 595 C and T x = 573 C, T p1 = 582 C, T p2 = 600 C respectively. Minor characteristic temperatures shift and the similar devitrification effect prove that initial glassy structure was kept. The crystallization enthalpy for the powder was 76.8 J/g and 47.6 J/g for the remelted Sample A, thus AD of the sample A with P-R remelting was 62.3 %. This value was the highest for all fabricated samples. Both Sample A and the initial powder are considered to be nonrelaxed due to long exothermal effect from lasting from T r to T x. As the relaxation usually causes embrittlement of MGs [9] it is important not only to retain an amorphous structure, but also prevent a relaxation. To investigate the effect of the pulse duration on the crystallization in HAZ, the activation energy (E a ) for the ISBN Fraunhofer / DDMC 16 4
5 March 16, Berlin / GER first stage of the crystallization, was calculated by the Ozawa equation (1). For this purpose linear function was fitted to ln(β) vs 0/T p plot, where β was heating rate and T p was temperature peak. llllllll ββββ = EEEE + CCCC (1) β - constant heating rate[k/s], T p [K] crystallization peak temperature, E a - crystallization activation energy [J/mol], R- gas constant [J/Kmol], C- constant. The calculated activation energy equals kj/mol for our alloy. The Ozawa model makes an assumption that during constant heating 63% of the volume fraction of the glass crystalizes at the T p. Due to devitrification kinetics model there is no defined β at which the crystallization completely stops. Thus to simplify the model we have assumed that a glass heated during a laser pulse to the maximum temperature (T max ) devitrifies if heating rate is lower than critical. Critical heating rate (β c ) is defined by equation (2). ln(β) Melting before devitri ication 4. Melting after devitri ication ββββ = e ( ) (2) Taking melting point T m = 1250 K and taking that it was independent from β, we have calculated critical heating rate β c = 8.77 * 10 6 K/s at which no glass devitrifies until material melts. T m Measured Tp value 500 µs pulse µs pulse β for µs pulse β for 500 µs pulse 0 0,7 0,8 0,9 1 1,1 1,2 0/T Fig. 8. The thermal model conditions for laser heated glass. ln(β) vs 0/T p plot with linear fit for Ozawa equation; β - constant heating rate[k/s]; T - temperature [K];T m - melting point of the alloy O l Plotting two intersecting lines (T m, and Ozawa linear fit) we have proposed four different thermal conditions for the laser heated glasses (Fig. 8). The first condition above T m and Ozawa line (O l ) corresponds to metallic glass melted without devitrification (1. Melting before devitrification). The second one below T m and above O l represents glass in HAZ which avoided devitrification due to high heating rate (2. Amorphous HAZ). The third region which is below T m and O l, where β was not sufficient, thus glass devitrified (3. Crystalline HAZ). The fourth, above T m and below O l represent glass melted after devitrification (4. Melting after devitrification). Assuming that the real heating rate in the melt pool and the HAZ were close to the T m divided by the total exposure time, two points were marked on the plot. The estimated heating rate for first melting (pulse duration 500 µs) was β 500 = 2,5 * 10 6 K/s. The estimated heating rate for second melting (P-R remelting with pulse duration µs) was β = 6.25 * 10 7 K/s. The proposed model explained different microstructures for the µs and 500 µs pulse melt pools. The µs pulse provided heating rate well above critical at melting point. It was fully located within first and second part of the plot, thus no crystallization occurred. On the other side the 500 µs pulse provided heating rate below critical (β c) at melting point. This pulse crossed both third and fourth part of the plot, thus it could be affected by the crystallization in HAZ and melting after devitrification. The model was focused on the constant heating condition but it could be used to the better understanding of crystallization during the cooling step. If the heating conditions are in the fourth part of the plot, the melt pool appears and its border contains crystalline phases. Thus during a melt pool cooling, crystallites might be uplifted by Marangoni convection and promote crystallization acting as homogenous nuclei. According to the experimental results and known asymmetry of the critical cooling and heating rates [10] we have stated that producing fully amorphous MGs part by SLM is limited not only by the cooling rate, but foremost by the heating rate required to counteract devitrification in HAZ. 4. Conclusions The Point-Random (P-R) rescanning strategy has restored original amorphous structure of the initial powder despite its low GFA and crystallization during the first melting. After the P-R processing amorphous phase retained connected between layers instead of forming the separate areas as observed in the samples made just with the single melting. The high aspect ratio of the amorphous areas fabricated in P-R mode was attributed to transition between conduction and key-hole mode melting. The difference between crystallization in the HAZ during the long and short pulses irradiation ISBN Fraunhofer / DDMC 16 5
6 March 16, Berlin / GER was attributed to the different heating rate and it was an effect of the devitrification kinetics. As a final concussion we have found that remelting with the key-hole mode is advantageous for the SLM processing of metallic glasses with low GFA. Furthermore amorphisation of the MGs during SLM is limited by the heating rate. Acknowledgements The authors would like to thank the NCBiR (National Center for Research and Development) for providing financial support to project LasIMP (Grant No. PBS3/A5/53/15). P-R scanning strategy is a part of patent pending method of producing MGs parts via SLM. Patent application priority date is 14/1/16. Literature [1] M. Ashby and A.Greer, Metallic glasses as structural materials.scripta Materialia, vol 54, no. 3, 06, pp [2] X. Gu,Y. Zheng,S. Zhong,T, Xi, J. Wang, and Wang, W., Corrosion of, and cellular responses to MgZnCa bulk metallic glasses, Biomaterials vol. 31, 10, pp [3] L. Huang, D. Qiao, B. Green, P. Liaw, J. Wang, S. Pang, Bio-corrosion study on zirconium-based bulk-metallic glasses Intermetallics vol.17, 09, pp [4] S. Pauly, L. Löber; R. Petters, M. Stoica, S. Scudino, U. Kühn, J. Eckert, Processing metallic glasses by selective laser melting. Mater Today, vol.16, no.1/2,13, pp [5] H. Jung, S. Choi, K. Prashanth, M. Stoica, S. Scudino, S. Yib, U. Kühn, D. H. Kim, K. B. Kim, J. Eckert, Fabrication of Fe-based bulk metallic glass by selective laser melting: A parameter study:. Materials & Design, vol. 86, 15, pp [6] X. Li,C. Kang, H. Kuang, T. Sercombe, The role of a low-energy density re-scan in fabricating crack-free Al85Ni5Y6Co2Fe2 bulk metallic glass composites via selective laser melting, Materials and Desing, vol. 46, 14, pp [7] G. Yang, X. Lin, F. Liu, Q. Hu, L. Ma, J. Li, W. Huang, Laser solid forming Zr-based bulk metallic glass, Intermetallics, vol. 22, 12, pp [8] T. Ozawa, Kinetic analysis of derivative curves in thermal analysis, Journal of Thermal Analysis, vol.2, 1970, pp [9] P. Murali, U. Ramamurty, Embrittlement of a bulk metallic glass due to sub-tg annealing, Acta Materialia, vol 53, 05, pp [10] J. Schroers, A. Masuhr, W. Johnson, Pronounced asymmetry in the crystallization behavior during constant heating and cooling of a bulk metallic glass-forming liquid, Physical Review B, vol. 60, no. 17, 1999 ISBN Fraunhofer / DDMC 16 6
Formation and Soft Magnetic Properties of Co Fe Si B Nb Bulk Glassy Alloys
Materials Transactions, Vol. 43, No. 5 (2002) pp. 1230 to 1234 c 2002 The Japan Institute of Metals EXPRESS REGULAR ARTICLE Formation and Soft Magnetic Properties of Co Fe Si B Nb Bulk Glassy Alloys Akihisa
More informationNew 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 informationDual phase bulk metallic glasses fabricated by hot pressing using two different types of glassy alloy powder
JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS Vol. 17, No. 7-8, July August 2015, p. 1026-1031 Dual phase bulk metallic glasses fabricated by hot pressing using two different types of glassy alloy
More informationInfluence of Spraying Conditions on Properties of Zr-Based Metallic Glass Coating by Gas Tunnel Type Plasma Spraying
Influence of Spraying Conditions on Properties of Zr-Based Metallic Glass by Gas Tunnel Type Plasma Spraying KOBAYASHI Akira *, KURODA Toshio *, KIMURA Hisamichi ** and INOUE Akihisa ** Abstract Metallic
More informationCharacterization 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 informationTHERMAL AND ELASTIC PROPERTIES OF CU-ZR-BE BULK-METALLIC-GLASS FORMING ALLOYS
Chapter 5 THERMAL AND ELASTIC PROPERTIES OF CU-ZR-BE BULK-METALLIC-GLASS FORMING ALLOYS The compositional dependence of thermal and elastic properties of Cu-Zr-Be ternary bulk-metallic-glass forming alloys
More informationPorous Bulk Metallic Glass Fabricated by Powder Consolidation
Journal of Minerals & Materials Characterization & Engineering, Vol. 7, No.2, pp 97-104, 2008 jmmce.org Printed in the USA. All rights reserved Porous Bulk Metallic Glass Fabricated by Powder Consolidation
More informationEffects of silicon and chromium additions on glass forming ability and microhardness of Co-based bulk metallic glasses
Indian Journal of Engineering & Materials Sciences Vol. 21, February 2014, pp. 111-115 Effects of silicon and chromium additions on glass forming ability and microhardness of Co-based bulk metallic glasses
More informationCrack initiation and fracture features of Fe Co B Si Nb bulk metallic glass during compression
Focussed on Crack Paths Crack initiation and fracture features of Fe Co B Si Nb bulk metallic glass during compression S. Lesz, A. Januszka, S. Griner, R. Nowosielski Silesian University of Technology,
More informationFe-B-Si-Nb Bulk Metallic Glasses with High Strength above 4000 MPa and Distinct Plastic Elongation
Materials Transactions, Vol. 45, No. 4 (2004) pp. 1214 to 1218 Special Issue on Bulk Amorphous, Nano-Crystalline and Nano-Quasicrystalline Alloys-V #2004 The Japan Institute of Metals Fe-B-Si-Nb Bulk Metallic
More informationSTRUCTURE EVOLUTION OF AlCr5.5Fe2Ti1 ALLOY DURING ITS COMPACTIZATION
STRUCTURE EVOLUTION OF AlCr5.5Fe2Ti1 ALLOY DURING ITS COMPACTIZATION Alena MICHALCOVÁ a,b, Dalibor VOJTĚCH a, Pavel NOVÁK a, Jan DRAHOKOUPIL c, Kamil KOLAŘÍK d a Institute of Chemical Technology, Prague,
More informationSynthesis of Ti-Based Bulk Metallic Glass Composites Containing WC Particles
Materials Transactions, Vol. 46, No. 12 (2005) pp. 2963 to 2967 Special Issue on Materials Science of Bulk Metallic Glasses #2005 The Japan Institute of Metals Synthesis of Ti-Based Bulk Metallic Glass
More informationSoft Magnetic Properties of Nanocystalline Fe Si B Nb Cu Rod Alloys Obtained by Crystallization of Cast Amorphous Phase
Materials Transactions, Vol. 43, No. 9 (2002) pp. 2337 to 2341 c 2002 The Japan Institute of Metals EXPRESS REGULAR ARTICLE Soft Magnetic Properties of Nanocystalline Fe Si B Nb Cu Rod Alloys Obtained
More informationStructure and magnetic properties of Fe 36 Co 36 B 19 Si 5 Nb 4 bulk metallic glasses
of Achievements in Materials and Manufacturing Engineering VOLUME 30 ISSUE 2 October 2008 Structure and magnetic properties of Fe 36 Co 36 B 19 Si 5 Nb 4 bulk metallic glasses R. Nowosielski, R. Babilas*
More informationBulk metallic glasses (BMGs) have shown unique. Spheroidization behavior of dendritic b.c.c. phase in Zr-based β-phase composite
Spheroidization behavior of dendritic b.c.c. phase in Zr-based β-phase composite *Sun Guoyuan 1, Li Ping 2, Chen Wei 3 and Song Xuding 4 1. School of Mechanical Engineering, North China University of Water
More informationKeywords. Aluminium-based amorphous alloys; melt spinning; crystallization behaviour; microhardness.
PRAMANA c Indian Academy of Sciences Vol. 65, No. 4 journal of October 2005 physics pp. 745 751 Effect of rare-earth elements on nanophase evolution, crystallization behaviour and mechanical properties
More informationConsolidation of [(Fe 0:5 Co 0:5 ) 0:75 Si 0:05 B 0:2 ] 96 Nb 4 Metallic Glassy Powder by SPS Method* 1
Materials Transactions, Vol. 50, No. 9 (2009) pp. 2264 to 2269 #2009 The Japan Institute of Metals Consolidation of [(Fe 0:5 Co 0:5 ) 0:75 Si 0:05 B 0:2 ] 96 Nb 4 Metallic Glassy Powder by SPS Method*
More informationMechanical Properties of Bulk Metallic Glasses and composites
Mechanical Properties of Bulk Metallic Glasses and composites M.L. Lee 1 *, Y. Li 1, 2, Y. Zhong 1, C.W. Carter 1, 3 1. Advanced Materials for Micro- and Nano- Systems Programmes, Singapore-MIT Alliance,
More informationPOROSITY DEVELOPMENT AND CRACKING BEHAVIOR OF Al-Zn-Mg-Cu ALLOYS FABRICATED BY SELECTIVE LASER MELTING
Solid Freeform Fabrication 2017: Proceedings of the 28th Annual International Solid Freeform Fabrication Symposium An Additive Manufacturing Conference POROSITY DEVELOPMENT AND CRACKING BEHAVIOR OF Al-Zn-Mg-Cu
More informationFabrication of Mg-based bulk metallic glasses by pressure die casting method
Indian Journal of Engineering & Materials Sciences Vol. 21, June 2014, pp. 259-264 Fabrication of Mg-based bulk metallic glasses by pressure die casting method A Borowski*, A Guwer, A Gawlas-Mucha, R Babilas
More informationEffects of Alloying Additions and Cooling Rate on the Microstructures and Mechanical Properties of the Cast Al-Mg-Si Alloys
Proceedings of the 12th International Conference on Aluminium Alloys, September 5-9, 2010, Yokohama, Japan 2010 2010 The Japan Institute of Light Metals pp. 1708-1713 1708 Effects of Alloying Additions
More informationSTUDYING AMORPHOUS-CRYSTALLINE TRANSITIONS IN POWDERS CAUSED BY BALL-MILLING
STUDYING AMORPHOUS-CRYSTALLINE TRANSITIONS IN POWDERS CAUSED BY BALL-MILLING K. Tomolya 1, D. Janovszky 2, A. Sycheva 3, A. Roósz 4 1 Ph.D. Research fellow, 2 Ph.D. Senior research fellow, 3 Ph.D. Research
More informationEffects of Electromagnetic Vibrations on Glass-Forming Ability in Fe-Co-B-Si-Nb Bulk Metallic Glasses
Materials Transactions, Vol. 47, No. 5 (2006) pp. 1360 to 1364 #2006 The Japan Institute of Metals Effects of Electromagnetic Vibrations on Glass-Forming Ability in Fe-Co-B-Si-Nb Bulk Metallic Glasses
More informationFabrication and thermal properties of Al 2 TiO 5 /Al 2 O 3 composites
Materials Science-Poland, Vol. 28, No. 3, 2010 Fabrication and thermal properties of Al 2 TiO 5 /Al 2 O 3 composites M. LI, F. CHEN, Q. SHEN *, L. ZHANG State Key Lab of Advanced Technology for Materials
More informationShield gas induced cracks during nanosecond-pulsed laser irradiation of Zr-based metallic glass
Appl. Phys. A (016)1:881 DOI 10.1007/s00339-016-0419-7 Shield gas induced cracks during nanosecond-pulsed laser irradiation of Zr-based metallic glass Hu Huang 1 Jun Noguchi 1 Jiwang Yan 1 Received: 30
More informationMICROSTRUCTURE AND PROPERTIES OD RAPID SOLIDIFIED AL-SI-FE AND AL-SI-FE-CR ALLOYS PREPARED BY CENTRIFUGAL ATOMIZATION. Filip PRŮŠA*, Dalibor VOJTĚCH
MICROSTRUCTURE AND PROPERTIES OD RAPID SOLIDIFIED AL-SI-FE AND AL-SI-FE-CR ALLOYS PREPARED BY CENTRIFUGAL ATOMIZATION Filip PRŮŠA*, Dalibor VOJTĚCH Department of Metals and Corrosion Engineering, Institute
More informationResearch Article A Centimeter-Sized Quaternary Ti-Zr-Be-Ag Bulk Metallic Glass
Advances in Materials Science and Engineering, Article ID 192187, 5 pages http://dx.doi.org/10.1155/2014/192187 Research Article A Centimeter-Sized Quaternary Ti-Zr-Be-Ag Bulk Metallic Glass S. F. Zhao,
More informationChapter 1 1 CHAPTER 1. INTRODUCTION Historical background and development of bulk metallic glasses
Chapter 1 1 CHAPTER 1. INTRODUCTION 1.1. Historical background and development of bulk metallic glasses Glass is any material that can be cooled from a liquid to a solid without crystallizing. Most metals
More informationMicrostructural development at weld interface between Zr-based glassy alloy and stainless steel by resistance microwelding
Journal of Physics: Conference Series Microstructural development at weld interface between Zr-based glassy alloy and stainless steel by resistance microwelding To cite this article: S Fukumoto et al 2012
More informationEffect of Electromagnetic Vibrations on Fe-Co-B-Si-Nb Bulk Metallic Glasses
Materials Transactions, Vol. 48, No. 1 (2007) pp. 53 to 57 #2007 The Japan Institute of Metals Effect of Electromagnetic Vibrations on Fe-Co-B-Si-Nb Bulk Metallic Glasses Takuya Tamura*, Daisuke Kamikihara,
More informationHyderabad, India. *Corresponding author
International Journal of Materials Science ISSN 0973-4589 Volume 12, Number 4 (2017), pp. 561-570 Research India Publications http://www.ripublication.com Influence of Rare-Earth concentration on the crystallization
More informationEffect of homogenizing treatment on microstructure and conductivity of 7075 aluminum alloy prepared by low frequency electromagnetic casting
Vol.11 No.1 January 214 Effect of homogenizing treatment on microstructure and conductivity of 775 aluminum alloy prepared by low frequency electromagnetic casting *Wang Gaosong, Zhao Zhihao, Guo Qiang
More informationNear-infrared luminescence of rare earth ions in oxyfluoride lead borate glasses and transparent glass-ceramic materials
Optica Applicata, Vol. XXXVIII, No. 1, 2008 Near-infrared luminescence of rare earth ions in oxyfluoride lead borate glasses and transparent glass-ceramic materials JOANNA PISARSKA 1, WITOLD RYBA-ROMANOWSKI
More informationSupporting Online Material for
www.sciencemag.org/cgi/content/full/315/5817/1385/dc1 Supporting Online Material for Super Plastic Bulk Metallic Glasses at Room Temperature Yan Hui Liu, Gang Wang, Ru Ju Wang, De Qian Zhao, Ming Xiang
More informationTwin-Roll Strip Casting of Iron-Base Amorphous Alloys
Materials Transactions, Vol. 48, No. 7 (2007) pp. 1584 to 1588 Special Issue on Bulk Metallic Glasses Selected Papers from the Fifth International Conference on Bulk Metallic Glasses (BMGV) #2007 The Japan
More informationQ. S. Zhang 1, W. Zhang 1; *, X. M. Wang 1, Y. Yokoyama 1, K. Yubuta 1 and A. Inoue 2
Materials Transactions, Vol. 49, No. 9 (2008) pp. 2141 to 2146 #2008 The Japan Institute of Metals EXPRESS REGULAR ARTICLE Structure, Thermal Stability and Mechanical Properties of Zr 65 Al 7:5 Ni 10 Cu
More informationPREPARATION AND PROPERTIES OF Al Fe AND Al Fe Cr ALLOYS. Petra HANUSOVÁ 1, Pavel NOVÁK 2
PREPARATION AND PROPERTIES OF Al Fe AND Al Fe Cr ALLOYS Petra HANUSOVÁ 1, Pavel NOVÁK 2 1 Brno University of Technology, Faculty of Mechanical Engineering, Institute of Material Science and Engineering,
More informationA new Ti Zr Hf Cu Ni Si Sn bulk amorphous alloy with high glass-forming ability
Journal of Alloys and Compounds 427 (2007) 171 175 A new Ti Zr Hf Cu Ni Si Sn bulk amorphous alloy with high glass-forming ability Y.J. Huang a, J. Shen a,, J.F. Sun a, X.B. Yu b, a School of Materials
More informationFabrication of Ni-Al Intermetallic Compounds on the Al Casting alloy by SHS Process
Fabrication of Ni-Al Intermetallic Compounds on the Al Casting alloy by SHS Process G.S. Cho *, K.R. Lee*, K.H. Choe*, K.W. Lee* and A. Ikenaga** *Advanced Material R/D Center, KITECH, 994-32 Dongchun-dong,
More information5. INVESTIGATION OF POROSITY IN THE PASTILLES
5. INVESTIGATION OF POROSITY IN THE PASTILLES 5.1. Introduction Many different types of controlled dosage forms have been developed to improve clinical efficiency of drug and patient compliance. In vivo
More informationThe 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 informationResearch on the High Strength Glass Ceramics/Mullite Ceramics Composites
New Journal of Glass and Ceramics, 2011, 1, 53-57 doi:10.4236/njgc.2011.12009 Published Online July 2011 (http://www.scirp.org/journal/njgc) 53 Research on the High Strength Glass Ceramics/Mullite Ceramics
More informationHahn-Meitner-Institut Berlin, Glienicker Str. 100, D-14109, Berlin, Germany
Journal of Metastable and Nanocrystalline Materials Vols. 20-21 (2004) pp. 35-40 online at http://www.scientific.net (2004) Trans Tech Publications, Switzerland Crystallization of Pd 40 Cu 30 Ni 10 P 20
More informationEFFECT OF SCANNING METHODS IN THE SELECTIVE LASER MELTING OF 316L/TiC NANOCOMPOSITIES
EFFECT OF SCANNING METHODS IN THE SELECTIVE LASER MELTING OF 316L/TiC NANOCOMPOSITIES B. AlMangour *, D. Grzesiak, J. M.Yang Department of Materials Science and Engineering, University of California Los
More informationCentimeter-scale-diameter Co-based bulk metallic glasses with fracture strength exceeding 5000 MPa
Article SPECIAL ISSUE Bulk Metallic Glasses December 011 Vol.56 No.36: 3973977 doi: 10.1007/s11434-011-4765-8 Centimeter-scale-diameter Co-based bulk metallic glasses with fracture strength exceeding 5000
More informationEffect of Nb content on the microstructure and mechanical properties of Zr Cu Ni Al Nb glass forming alloys
Journal of Alloys and Compounds 403 (2005) 239 244 Effect of Nb content on the microstructure and mechanical properties of Zr Cu Ni Al Nb glass forming alloys Y.F. Sun a, C.H. Shek b,, B.C. Wei c, W.H.
More informationSURFACE ALLOYING OF ALUMINUM WITH COPPER USING CO 2 LASER
5 th International & 26 th All India Manufacturing Technology, Design and Research Conference (AIMTDR 2014) December 12 th 14 th, 2014, IIT Guwahati, Assam, India SURFACE ALLOYING OF ALUMINUM WITH COPPER
More informationMAGNESIUM-ZINC ALLOY PREPARED BY MECHANICAL ALLOYING AND SPARK PLASMA SINTERING. Michaela FOUSOVA, Jaroslav CAPEK, Dalibor VOJTECH
MAGNESIUM-ZINC ALLOY PREPARED BY MECHANICAL ALLOYING AND SPARK PLASMA SINTERING Michaela FOUSOVA, Jaroslav CAPEK, Dalibor VOJTECH Department of Metals and Corrosion Engineering, Institute of Chemical Technology,
More informationmetallic glasses (amorphous alloys)
A brief introduction to metallic glasses (amorphous alloys) Sheng Guo Assistant Professor Materials and Manufacturing Technology Department E-mail: sheng.guo@chalmers.se Outline What are metallic glasses
More informationDevelopment of novel Zr-based MG for thermo-plastic forming
Development of novel Zr-based MG for thermo-plastic forming 구조재료심화연구 (Current Status of Structural Materials) March 20th, 2016 Kyung-jun Kim 1. Introduction: Thermoplastic forming of metallic glass 2.
More informationTHERMAL STABILITY OF RAPIDLY SOLIDIFIED Al-Fe-X ALLOYS. Milena VODĚROVÁ, Pavel NOVÁK, Alena MICHALCOVÁ, Dalibor VOJTĚCH
THERMAL STABILITY OF RAPIDLY SOLIDIFIED Al-Fe-X ALLOYS Milena VODĚROVÁ, Pavel NOVÁK, Alena MICHALCOVÁ, Dalibor VOJTĚCH Department of Metals and Corrosion Engineering, Institute of Chemical Technology,
More informationFabrication and investigation of intermetallic compound-glassy phase composites having tensile ductility
Fabrication and investigation of intermetallic compound-glassy phase composites having tensile ductility The purpose The purpose of the proposed study was to produce in-situ ductile crystalline intermetallic
More informationDefense Technical Information Center Compilation Part Notice
UNCLASSIFIED Defense Technical Information Center Compilation Part Notice ADP014286 TITLE: Formation, Mechanical and Electrical Properties of Ni-based Amorphous Alloys and their Nanocrystalline Structure
More informationÓThe Author(s). This article is published with open access at Springerlink.com DOI: /s /$19.00
JMEPEG (2014) 23:2241 2246 ÓThe Author(s). This article is published with open access at Springerlink.com DOI: 10.1007/s11665-014-0972-1 1059-9495/$19.00 Structure, Properties, and Crystallization of Mg-Cu-Y-Zn
More informationAMORPHISATION PROCESS DURING MECHANICAL ALLOYING OF Al-Fe-Ti POWDERS AND CRYSTALLISATION OF THE MILLING PRODUCTS
Amorphisation Rev.Adv.Mater.Sci. process 18(2008) during 393-397 mechanical alloying of Al-Fe-Ti powders and crystallisation of... 393 AMORPHISATION PROCESS DURING MECHANICAL ALLOYING OF Al-Fe-Ti POWDERS
More informationMicrostructural Characterization of Ti 20 Zr 20 Cu 40 Ni 20 Metallic Glass
Engineering Physics 2018; 2(1): 6-10 http://www.sciencepublishinggroup.com/j/ep doi: 10.11648/j.ep.20180201.12 Microstructural Characterization of Ti 20 Zr 20 Cu 40 Ni 20 Metallic Glass Panugothu Rama
More informationPROPERTIES OF AL-BASED ALLOYS PREPARED BY CENTRIFUGAL ATOMISATION AND HOT EXTRUSION. Filip PRŮŠA, Dalibor VOJTĚCH
PROPERTIES OF AL-BASED ALLOYS PREPARED BY CENTRIFUGAL ATOMISATION AND HOT EXTRUSION Filip PRŮŠA, Dalibor VOJTĚCH Institute of Chemical Technology Prague, Department of Metals and Corrosion Engineering,
More informationFillability and Imprintability of High-strength Ni-based Bulk Metallic Glass Prepared by the Precision Die-casting Technique
Materials Transactions, Vol. 45, No. 4 (2004) pp. 1239 to 1244 Special Issue on Bulk Amorphous, Nano-Crystalline and Nano-Quasicrystalline Alloys-V #2004 The Japan Institute of Metals Fillability and Imprintability
More informationLiquid 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 informationEffect of Iron Plating Conditions on Reaction in Molten Lead-Free Solder
Materials Transactions, Vol. 45, No. 3 (24) pp. 741 to 746 Special Issue on Lead-Free Soldering in Electronics #24 The Japan Institute of Metals Effect of Iron Plating Conditions on Reaction in Molten
More informationCompression stress induced flow temperature reduction in a bulk Zr 41:2 Ti 13:8 Cu 12:5 Ni 10:0 Be 22:5 metallic glass
Scripta Materialia 47 (2002) 787 791 www.actamat-journals.com Compression stress induced flow temperature reduction in a bulk Zr 41:2 Ti 13:8 Cu 12:5 Ni 10:0 Be 22:5 metallic glass H.J. Jin, X.J. Gu, F.
More informationInstitute of Physics and Chemistry of Metals, University of Silesia, Bankowa 12, Katowice, Poland
J. Phys. IV France 11 (2001) Pr8-345 EDP Sciences, Les Ulis Structure of melt spun 2 5Ti 5 ocu 2 5 ribbons studied by X-ray diffraction T. Goryczka, M. Karolus, P. Ochin 1 and H. Morawiec Institute of
More informationINVESTIGATION OF MICROSTRUCTURE FEATURES OF AlMg9 ALLOY
INVESTIGATION OF MICROSTRUCTURE FEATURES OF AlMg9 ALLOY Zdenka Zovko Brodarac, Jožef Medved 2, Primož Mrvar 2 1 University of Zagreb Faculty of Metallurgy, Aleja narodnih heroja 3, Sisak, Croatia 2 University
More information"Advanced Manufacturing Technologies", UCL, Louvain-la-Neuve, 24/11/2015
"Advanced Manufacturing Technologies", UCL, Louvain-la-Neuve, 24/11/2015 1 2 Outline Introduction Additive manufacturing Laser Beam Melting vs Laser Cladding Specificities (1) ultra-fast thermal cycles
More informationTitle containing nano-crystalline. Author(s) Matsumoto, Naoki; Matsumoto, Ryosuk. Citation Journal of Non-Crystalline Solids (
Title Estimation of shear-banding containing nano-crystalline resista particl Author(s) Matsumoto, Naoki; Matsumoto, Ryosuk Citation Journal of Non-Crystalline Solids ( Issue Date 2009-01 URL http://hdl.handle.net/2433/88965
More informationDesign and fabrication of functionally graded components by selective laser melting. C. N. Sun*#, S. Y. Choy*+, K. F. Leong*+, J.
Solid Freeform Fabrication 216: Proceedings of the 26th 27th Annual International Solid Freeform Fabrication Symposium An Additive Manufacturing Conference Design and fabrication of functionally graded
More informationThe Possibility of Selected Surface Layer Modification of Nodular Iron Engine Parts by Laser Boronizing
www.seipub.org/ve Vehicle Engineering (VE) Volume 1 Issue 3, September 213 The Possibility of Selected Surface Layer Modification of Nodular Iron Engine Parts by Laser Boronizing Marta Paczkowska Faculty
More information11.3 Polishing with Laser Radiation
196 E. Willenborg 11.3 Polishing with Laser Radiation Edgar Willenborg The surface roughness of a part or product strongly influences its properties and functions. Among these can be counted abrasion and
More informationInvestigation on the homogenization annealing treatment of 5052-based aluminum alloys
Indian Journal of Engineering & Materials Sciences Vol. 24, February 2017, pp. 57-62 Investigation on the homogenization annealing treatment of 5052-based aluminum alloys Jing Zhang*, Jingjing Zhao & Rulin
More informationSTRUCTURE AND PROPERTIES OF ALUMINUM ALLOYS WITH ADDITIONS OF TRANSITION METALS PRODUCED VIA COUPLED RAPID SOLIDIFICATION AND HOT EXTRUSION
STRUCTURE AND PROPERTIES OF ALUMINUM ALLOYS WITH ADDITIONS OF TRANSITION METALS PRODUCED VIA COUPLED RAPID SOLIDIFICATION AND HOT EXTRUSION KULA Anna 1, BLAZ Ludwik 1 1 AGH University of Science and Technology,
More informationOPTIMALLASER TREATMENT PARAMETERS OF AA 6061-O ALUMINUM ALLOY
OPTIMALLASER TREATMENT PARAMETERS OF AA 6061-O ALUMINUM ALLOY Waleed Al-Ashtari and Zahraa Abdulsattar Department of Mechanical Engineering, College of Engineering, University of Baghdad, Iraq E-Mail:
More informationXRD, DTA AND DENSITY STUDIES OF LITHIUM BORATE GLASSES CONTAINING COPPER A. A. Soliman
, pp. 188 197 XRD, DTA AND DENSITY STUDIES OF LITHIUM BORATE GLASSES CONTAINING COPPER A. A. Soliman Physics Department, Faculty of Girls, Ain Shams University, Heliopolis, Egypt Received 4 November, 2008
More informationViscous flow behavior and thermal properties of bulk amorphous Mg 58 Cu 31 Y 11 alloy
Intermetallics 15 (2007) 1303e1308 www.elsevier.com/locate/intermet Viscous flow behavior and thermal properties of bulk amorphous Mg 58 Cu 31 Y 11 alloy Y.C. Chang a, T.H. Hung a, H.M. Chen a, J.C. Huang
More informationGlass-forming ability of melt-spun multicomponent (Ti, Zr, Hf) (Cu, Ni, Co) Al alloys with equiatomic substitution
Journal of Non-Crystalline Solids 347 (2004) 166 172 www.elsevier.com/locate/jnoncrysol Glass-forming ability of melt-spun multicomponent (Ti, Zr, Hf) (Cu, Ni, Co) Al alloys with equiatomic substitution
More informationCo-based soft magnetic bulk glassy alloys optimized for glass-forming ability and plasticity
Bull. Mater. Sci., Vol. 39, No. 3, June 2016, pp. 691 695. DOI 10.1007/s12034-016-1207-x c Indian Academy of Sciences. Co-based soft magnetic bulk glassy alloys optimized for glass-forming ability and
More informationProduction of Homogeneous Cu 2 ZnSnS 4 by Splat Solidification in Microgravity
(S72 S77) 8th Japan-China-Korea Workshop on Microgravity Sciences for Asian Microgravity Pre-Symposium Production of Homogeneous Cu 2 ZnSnS 4 by Splat Solidification in Microgravity Tatsuya NAKAZAWA 1,
More informationMECHANICAL PROPERTIES AND THERMAL STABILITY OF ALSI-X BASED ALLOYS PREPARED BY CENTRIFUGAL ATOMIZATION. Filip PRŮŠA*, Dalibor VOJTĚCH
MECHANICAL PROPERTIES AND THERMAL STABILITY OF ALSI-X BASED ALLOYS PREPARED BY CENTRIFUGAL ATOMIZATION Filip PRŮŠA*, Dalibor VOJTĚCH Department of Metals and Corrosion Engineering, Institute of Chemical
More informationEnhanced Amorphization by Sn Substitution for Si and B in the Ball-milled Ti 50 Ni 22 Cu 18 Al 4 Si 4 B 2 Alloy. L.C. Zhang, Z.Q. Shen, J.
Journal of Metastable and Nanocrystalline Materials Vols. 20-21 (2004) pp. 488-493 online at http://www.scientific.net Journal 2004 Citation Trans Tech (to Publications, be inserted by Switzerland the
More informationEffect of melt temperature on the oxidation behavior of AZ91D magnesium alloy in 1,1,1,2-tetrafluoroethane/air atmospheres
available at www.sciencedirect.com www.elsevier.com/locate/matchar Effect of melt temperature on the oxidation behavior of AZ91D magnesium alloy in 1,1,1,2-tetrafluoroethane/air atmospheres Hukui Chen
More informationMechanical and functional properties related to porous structure of recycled aluminium sponges
1 Mechanical and functional properties related to porous structure of recycled aluminium sponges P. Fernández 1, J. Cruz 1, M. A. Navacerrada 2, C. Díaz 2, L.E. García-Cambronero 3, R. Drew 4 1 Mechanical
More informationExperimental O 3. Results and discussion
Introduction Surface coatings to protect against oxidation extend the service temperature and the service life of basic metals. The commercially used coating systems can be divided into three main groups:
More informationMicrostructural 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 informationKeywords: List the keywords covered in your paper. These keywords will also be used by the publisher to produce a keyword index.
1-4 1-5 PHASES AND STRUCTURE CHARACTERISTICS OF THE NEAR EUTECTIC AL-SI-CU ALLOY USING DERIVATIVE THERMO ANALYSIS L.A. Dobrzanski 1, a, M. Krupinski 2,b, K. Labisz 3,c, B. Krupinska 4,d and A. Grajcar
More informationResearch Article Nanocrystalline Phase Formation inside Shear Bands of Pd-Cu-Si Metallic Glass
Advances in Materials Science and Engineering, Article ID 490181, 4 pages http://dx.doi.org/10.1155/2014/490181 Research Article Nanocrystalline Phase Formation inside Shear Bands of Pd-Cu-Si Metallic
More informationMICROSTRUCTURAL CHARACTERIZATION OF MODIFIED COMMERCIAL 2219 ALUMINUM ALLOY
Association of Metallurgical Engineers Serbia and Montenegro Scientific paper AME UDC:669.715.17.2:62.192.4=2 MICROSTRUCTURAL CHARACTERIZATION OF MODIFIED COMMERCIAL 2219 ALUMINUM ALLOY V. MAKSIMOVIĆ 1,
More informationSupporting Information. Selective Metallization Induced by Laser Activation: Fabricating
Supporting Information Selective Metallization Induced by Laser Activation: Fabricating Metallized Patterns on Polymer via Metal Oxide Composite Jihai Zhang, Tao Zhou,* and Liang Wen State Key Laboratory
More informationOriginal papers. Submitted August 28, 2012; accepted November 26, 2012
Original papers Preparation of leucite-based composites # Alexandra Kloužková, Martina Mrázová*, Martina Kohoutková**, Jaroslav Kloužek* Department of Glass and Ceramics, Institute of Chemical Technology,
More informationAvailable online at ScienceDirect. Physics Procedia 56 (2014 ) 58 63
Available online at www.sciencedirect.com ScienceDirect Physics Procedia 56 (2014 ) 58 63 8 th International Conference on Photonic Technologies LANE 2014 Microstructure-controllable laser additive manufacturing
More informationCHAPTER 4. SYNTHESIS OF ALUMINIUM SELENIDE (Al 2 Se 3 ) NANO PARTICLES, DEPOSITION AND CHARACTERIZATION
40 CHAPTER 4 SYNTHESIS OF ALUMINIUM SELENIDE (Al 2 Se 3 ) NANO PARTICLES, DEPOSITION AND CHARACTERIZATION 4.1 INTRODUCTION Aluminium selenide is the chemical compound Al 2 Se 3 and has been used as a precursor
More informationPhase transformation kinetics and microstructure of NiTi shape memory alloy: effect of hydrostatic pressure
Bull. Mater. Sci., Vol., No. 4, August 2017, pp. 799 803 DOI.07/s12034-017-1413-1 Indian Academy of Sciences Phase transformation kinetics and microstructure of NiTi shape memory alloy: effect of hydrostatic
More informationMECHANICAL BEHAVIOUR OF AMORPHOUS Mg-23.5Ni RIBBONS
VIII Congreso Nacional de Propiedades Mecánicas en Sólidos, Gandía 2002 61-70 MECHANICAL BEHAVIOUR OF AMORPHOUS Mg-23.5Ni RIBBONS P. Pérez a, G.Garcés a, P. Adeva a and F. Sommer b a Centro Nacional de
More informationLocal microstructure evolution at shear bands in metallic glasses with nanoscale phase separation
Supplementary Information Local microstructure evolution at shear bands in metallic glasses with nanoscale phase separation Jie He 1,2, Ivan Kaban 2,3, Norbert Mattern 2, Kaikai Song 2, Baoan Sun 2, Jiuzhou
More informationThe Application of ATD and DSC Methods to Study of the EN AC Alloy Phase Transformations
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 (1897-3310) Volume 17 Issue 2/2017 207 211 36/2
More informationABSTRACT. amorphous metals, and utilized the correlation between elastic properties and fragility as a
ABSTRACT In the present thesis study, we combined molecular dynamics (MD) simulations and experiments to systematically investigate the Debye-Grüneisen thermal expansion effect and configurational potential
More informationR.D.S. Lisboa, M.N.R.V.Perdigão, C.S.Kiminami ABSTRACT
Crystallization of amorphous Al 84 Ni 8 Co 4 Y 3 Zr 1 melt-spun ribbons R.D.S. Lisboa, M.N.R.V.Perdigão, C.S.Kiminami Departamento de Engenharia de Materiais, Universidade Federal de São Carlos São Carlos,
More informationBonding strength of Al/Mg/Al alloy tri-metallic laminates fabricated
Bull. Mater. Sci., Vol. 34, No. 4, July 2011, pp. 805 810. Indian Academy of Sciences. Bonding strength of Al/Mg/Al alloy tri-metallic laminates fabricated by hot rolling X P ZHANG, *, M J TAN, T H YANG,
More informationMg-Al alloys, such as AZ91 and AM60 alloys, have been
Effect of Cu addition on microstructure and properties of Mg-10Zn-5Al-0.1Sb high zinc magnesium alloy *You Zhiyong, Zhang Yuhua, Cheng Weili, Zhang Jinshan and Wei Yinghui ( College of Materials Science
More informationNanocrystalline 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 informationStructural changes of austenitic steel obtained by 532 nm and 1064 nm Nd:YAG laser radiation
JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS Vol. 8, No. 1, February 2006, p, 230-234 Structural changes of austenitic steel obtained by 532 nm and 1064 nm Nd:YAG laser radiation M. I. RUSU *, R.
More information3.1. Chapter 3 - ZrTi Based Be Bearing Glasses Optimized for High Thermal Stability
3.1 Chapter 3 - ZrTi Based Be Bearing Glasses Optimized for High Thermal Stability and Thermoplastic Formability We flesh out the details of the alloy development story in this chapter with a thorough
More information