Available online at ScienceDirect. Procedia Engineering 101 (2015 ) 85 92
|
|
- Harriet Wade
- 6 years ago
- Views:
Transcription
1 Available online at ScienceDirect Procedia Engineering 101 (2015 ) rd International Conference on Material and Component Performance under Variable Amplitude Loading, VAL2015 Corrosion fatigue crack growth of 7475 T7351 aluminum alloy under flight simulation loading A. Chemin a *, D. Spinelli a, W. Bose Filho a, C. Ruchert a a,* Department of Materials Engineering, São Carlos School of Engineering, University of São Paulo, Av. João Dagnone, 1100 Jd. Sta Angelina, zip code: , Sao Carlos Sao Paulo Brasil Abstract Corrosion crack propagation experiments were carried out on specimens of 7475 T7351 aluminum alloy. Variable amplitude tests were performed with flight-simulated spectrum Twist (Transport Aircraft Wing Structures) and Falstaff (Fighter Aircraft Loading Standard for Fatigue) exposed to air and saline environment. The results showed that fatigue crack propagation life of specimens tested on saline environment were longer than specimens tested on air environment. The fatigue surfaces of specimens tested on saline environment examined in the SEM showed oxide and Na crystals in the wake of crack, which can promote retardation of crack propagation The The Authors. Authors. Published Published by Elsevier by Elsevier Ltd. This Ltd. is an open access article under the CC BY-NC-ND license Peer-review ( under responsibility of the Czech Society for Mechanics. Peer-review under responsibility of the Czech Society for Mechanics Keywords:Corrosion fatigue, aluminum alloy, flight load 1. Introduction Fatigue and corrosion are recognized as degradation mechanisms that affect the integrity of components, which are built with aluminum alloy. Corrosion is a phenomenon that can start naturally and is usually associated to intermetallic particles that can transform the aluminum alloy to electrochemical cell, whereas fatigue is a phenomenon that occurs because the cyclic load and for this reason, the structure of material is deformed permanently (1,2). The combination of these phenomena have been studied by development of new test methodologies that promotes research and knowledge, in laboratory testing, as the behavior material varies according with environment and loading * Corresponding author. Tel.: ; fax: address:aline.albuquerque@usp.br The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license ( Peer-review under responsibility of the Czech Society for Mechanics doi: /j.proeng
2 86 A. Chemin et al. / Procedia Engineering 101 ( 2015 ) simultaneously (3,4,5,6). The corrosion of commercial alloys for aircraft occurs because of intermetallics, such as Al 7Cu 2Fe presents in all 7000 series alloy (3,7). The fatigue crack growth in metals that leads to final fracture initiates from slip lines subjected to both plastic deformation and corrosion at the same time (5). When the crack is open the slip motion exposes fresh metal surface and then becomes anodic, the adjacent regions where no slip occurs become cathodic, thereby forming a local electrochemical cell (5). The material under random loading, as during a flight for example, plus corrosion effects cause the crack growth analyses to be more complex. In 1970, two standards for flight simulation loading, TWIST and FALSTAFF by NLR (National Laboratory Research), were developed and are generate with the mean stress for TWIST and maximum stress for FALSTAFF (8,9). The main aim of this paper is evaluate the fatigue life of 7475 T7351 aluminum alloy under flight simulated loading and corrosive environment at the same time. The NaCl solution was chosen as one of the corrosive environments, because of the saline nature of seawater. Nomenclature a F TWIST FASLTAFF NLR Crack size, mm Flight numbers A Standardized load sequence for flight simulation tests on transport aircraft wing structures Fighter Aircraft Loading Standard for Fatigue National Laboratory Research 2. Experimental Detail 2.1. Material The chemical composition of 7475 T7351 was detected by X-ray optical spectroscopy and presented on Table 1. Table 1. Chemical composition of 7475 T7351 aluminum alloy (% wt) Si Fe Cu Mn Mg Cr Zn Ti P V B Al % Base The values of chemical composition of 7475 T7351 aluminum alloy presented on Table 1 is according with recommendations of ASM Tables 2 and 3 present the tensile properties from tests conducted in the T and L directions, as recommended in ASTM E8M-00. Table 2. Strength test of specimen in direction L (ASTM E8M-00). Φ(mm) A (mm 2 ) σ r (MPa) σ y (MPa) AR (%) ΔL a (%) E (GPa) Mean Values 6,052 28,77 469,8 395, ,55 71 DP 0,064 0,61 13,28 13,04 3 1,17 7,7
3 A. Chemin et al. / Procedia Engineering 101 ( 2015 ) Table 3. Strength test of specimen in direction T (ASTM E8M-00). Φ(mm) A (mm 2 ) σ r (MPa) σ y (MPa) AR (%) ΔL a (%) E (GPa) Mean values 5,99 28,23 472,2 398, ,18 73 DP 0,052 0,61 13,28 13,04 0,8 0,46 1, Fatigue tests The two simulated flight histories were generate from Genesis for Fatigue. TWIST has 4000 flights and cycles and was simulated with mean stress 80MPa, Figure 1 (a); the FALSTAF has 200 flights or points of load reverse and was simulated with maximum stress 200 MPa. Fatigue crack growth tests used M(T) specimens in T-L direction, dimension of height, width and thickness (244x100x3mm), center notch 10mm and pre crack 1mm (2a=2mm). The tests were performed at room and saline environment of 3.5% and 5.0% NaCl on MTS dynamic test machine, Figure 1. The 3.5% NaCl was chosen as one of the environments because of the composition of seawater, and 5.0%NaCl was chosen because this composition is recommended for corrosion acceleration tests. The crack size was determined by the electrical-potential method. Table 4 shows the sequence of fatigue crack growth tests performed and shows the parameters obtained experimentally, to generate saline fog. Table 4. Parameter of Fatigue tests under spectrum loading: a= Mean Stress and b= Maximum Stress. Specimen Fatigue Test Environment Stress a,b (MPa) CP1 TWIST Air 80 a CP2 TWIST 3.5% NaCl 80 a CP3 TWIST 5.0% NaCl 80 a CP4 FALSTAFF Air 200 b CP5 FALSTAFF 3.5% NaCl 200 b CP6 FALSTAFF 5.0% NaCl 200 b
4 88 A. Chemin et al. / Procedia Engineering 101 ( 2015 ) (a) (b) Chamber for nebulization of saline solution Figure 1. Corrosion fatigue test (a) MTS machine and (b) the scheme of crack encapsulation system. The data obtained by fatigue tests under spectrum loading were processed and the fatigue crack rate was determined by equation (1): d2a df = a i+1 a i F i+1 F i (1)
5 A. Chemin et al. / Procedia Engineering 101 ( 2015 ) Results The figure 2 (a) shows the crack size versus Flight number and Figure 2(b) shows fatigue crack rate versus crack size to flight TWIST exposed for each chose environment. (a)
6 90 A. Chemin et al. / Procedia Engineering 101 ( 2015 ) (b) Figure 2. Fatigue test under TWIST and FALSTAFF flight (a) 2a vs Flight numbers, (b) d2a/df vs 2a. (enlarge these figures, the page limit is 8, so they can be enlarged, so the legends and data can be read) Figure 2(a) shows that for fatigue crack growth tests under TWIST flight loading and environment of 3.5% NaCl, the specimen failed under flight numbers close the test in air, on Figure 2(b) is possible to see that the fatigue crack rate of air test and 3.5%Cl were close. However, when the tests were performed on environment of 5.0%NaCl, the specimen fractured with larger flight number. For this fatigue crack growth test at 5.0%NaCl, the specimen presented a large life than tests at air and 3.5%NaCl, in other words, this environment (5.0%NaCl) decelerated the crack growth and not by hydrogen embritllement or acidification of surface, as expected (10). The fatigue crack growth tests under FALSTAFF flight loading and saline environment shown a similar behavior, Figure 2 (a), as the tests performed under TWIST flight: the specimen tested at saline environment fractured with larger flights than air tests. The fatigue crack propagation rate revealed that the crack growth occurred with acceleration and retardation and with low rate values than tests executed at air. The flight is a random loading that promotes a load interaction effect on crack tip as formation of plastic zone, which can decelerates the crack growth. However, the oxide and NaCl crystals formed by corrosion on material surface
7 A. Chemin et al. / Procedia Engineering 101 ( 2015 ) can induce the crack closure (11) and so, decelerates the crack growth too. Both phenomenon compete during the crack growth process, the positive load can form plastic zone and the negative load can promotes residual stress that accelerate the growth; the corrosion products deposited on crack tip and on wake of the crack, because this competition, crack growth rate showed peaks and valleys that are the acceleration and delay. Figures 3 and 4 shows the fractured fatigue surfaces. (a) (b) (c) Figure 3. Fatigue fracture under TWIST flight at (a) Air, (b) 3.5% NaCl, (c) 5.0% NaCl. (a) (b) (c) Figure 4. Fatigue fracture under FALSTAFF flight at (a) Air, (b) 3.5% NaCl, (c) 5.0% NaCl. Figures 3 (a) and 4 (a) show the fatigue surfaces on tests under TWIST and FALSTAFF, respectively, for air. Both surfaces reveal striation that is feature of fatigue random loading. The Figure 3 (b) and Figure 4 (b) show the surface fracture at 3.5% NaCl, in these surfaces, the striation is not clear and is possible see oxide products. The Figure 3 (c) the marks made by corrosion products, the load pressed these products against the surface, and this showed the marks. Figure 4 (c) does not show the marks of corrosion products.
8 92 A. Chemin et al. / Procedia Engineering 101 ( 2015 ) Conclusions The results of corrosion fatigue crack growth tests showed a competition between corrosion effects and load effects as observed by graphs of fatigue crack growth rate to FALSTAFF and TWIST flight, feature by peaks and valleys of rate curves. The fatigue surfaces showed the presence of corrosion products that can promotes closure induced by oxide. Acknowledgements The authors thank the Brazilian aircraft manufacturer EMBRAER for supplying the material used in this research, to Professor Dr. Artur Motheo at São Carlos Institute of Chemistry IQSC/University of Sao Paulo for discussion about corrosion phenomena and CNPq (Brazil s National Council for Scientific and Technological Development) for the scholarships granted to them. 5. Reference [1] J. Schijve, Fatigue of structures and materials in the 20th century and the state of the art, Int. J. Fatigue, vol. 25, no. 8, pp , Aug [2] W. Geary, A review of some aspects of fatigue crack growth under variable amplitute loading, Int. J. Fatigue, vol. 14, no. 6, pp , Nov [3] J. Schijve. Fatigue of aircraft materials and structures. International Journal of Fatigue, v. 16, n. 1, p , 1994; [4] F. Menan; G. Henaff. Influence of frequency and exposure to a saline solution on the corrosion fatigue crack growth behavior of the aluminum alloy International Journal of Fatigue, v.31, p , [5] R. P. Gangloff. Environmental Cracking - Corrosion Fatigue. In: R. Baboian (Ed.); Corrosion Tests and Standards: Application and Interpretation-Second Edition. p.1-20, ASTM. [6] Braun, R. Transgranular environment-induced cracking of 7050 aluminium alloy under cyclic loading conditions at low frequencies. International Journal of Fatigue, v. 30, n , p , [7] A. Chemin, D. Marques, L. Bisanha, A. D. J. Motheo, W. W. Bose Filho, and C. O. F. Ruchert, Influence of Al7Cu2Fe intermetallic particles on the localized corrosion of high strength aluminum alloys, Mater. Des., vol. 53, pp , Jan [8] J. B. Jonge, D. Schütz, H. Lowak, J. Schijve; A Standardized load sequence for flight simulation tests on transport aircraft wing structures TWIST. National Laboratory of Research (NLR). Amsterdan, [9] M. G. Van D. and J. B. Jonge. Introduction to a Fighter Aircraft Loading Standard for Fatigue Evaluation - FALSTAFF. Amsterdan. National Aerospace Laboratory NLR, [10] S. Mikheevskiy, G. Glinka, E. Lee; Fatigue crack growth analysis under spectrum loading in various environmental conditions. Metal. And Mat. Trans. A, April [11] K. Saxena and V. M. Radhakrishnan, Development of fatigue crack closure mechanism maps Part 1 - Basic concepts and boundary equations, Mat. Scien. And Tech. vol. 14, no. December, pp , 1998.
Available online at ScienceDirect. Procedia Engineering 81 (2014 )
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 81 (2014 ) 598 603 11th International Conference on Technology of Plasticity, ICTP 2014, 19-24 October 2014, Nagoya Congress
More informationInfluence of Shot Peening on the Fatigue Resistance of Sulfuric Anodized AA 7175-T74
Influence of Shot Peening on the Fatigue Resistance of Sulfuric Anodized AA 7175-T74 H.J. C. Voorwald 1 a, T. A. Minto 1,b, M. Y. Pitanga 2,c, M. C. Fonseca 3,d 1 UNESP Department of Materials and Technology,
More informationStatistic characteristics of fatigue properties in magnesium alloy
Available online at www.sciencedirect.com Procedia Engineering 10 (2011) 1232 1237 ICM11 Statistic characteristics of fatigue properties in magnesium alloy S. Mohd a,c, *, Y. Otsuka b, Y. Miyashita b,
More informationAvailable online at ScienceDirect. Procedia Engineering 101 (2015 )
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 101 (2015 ) 302 311 3rd International Conference on Material and Component Performance under Variable Amplitude Loading, VAL2015
More informationCorrosion-Fatigue Cracking in Al 7075 Alloys
Naval Research Laboratory Washington, DC 20375-5320 NRL/MR/6355--14-9582 Corrosion-Fatigue Cracking in Al 7075 Alloys P.S. Pao R.L. Holtz Multifunctional Materials Branch Materials Science and Technology
More informationEffect of Occasional Shear Loading on Fatigue Crack Growth in 7075 Aluminum Alloy M. Makizaki 1, a, H. Matsunaga 2, 4, b, K. Yanase 3, 4, c 3, 4, d
Materials Science Forum Online: 213-3-11 ISSN: 1662-9752, Vol. 75, pp 264-267 doi:1.428/www.scientific.net/msf.75.264 213 Trans Tech Publications, Switzerland Effect of Occasional Shear Loading on Fatigue
More informationStress Corrosion Cracking of Novel Steel for Automotive Applications
Available online at www.sciencedirect.com Procedia Engineering 10 (2011) 3381 3386 ICM11 Stress Corrosion Cracking of Novel Steel for Automotive Applications Muhammed. Khalissi a, R.K. Singh Raman a,b,
More informationAvailable online at ScienceDirect. Procedia Engineering 114 (2015 )
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 114 (2015 ) 606 612 1st International Conference on Structural Integrity Fatigue Performance Of AISI 4340 Steel Ni-Cr-B-Si-Fe
More informationAvailable online at Fatigue G.S.Junior, H.J.C. Voorwald, L. F. S. Vieira, M. O. H. Cioffi, R.G.Bonora
Available online at www.sciencedirect.com Procedia Procedia Engineering Engineering 2 (2010) 00 (2009) 649 656 000 000 Procedia Engineering www.elsevier.com/locate/procedia Fatigue 2010 Evaluation of WC-10Ni
More informationThe Effect of Mean Stress on Corrosion Fatigue Life
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 213 (2018) 581 588 7 th International Conference on Fatigue Design, Fatigue Design 2017, 29-30 November 2017, Senlis, France
More informationPrediction of fatigue crack propagation in aluminum alloy with local yield strength gradient at the crack path
Proceedings of 14 th International Conference on Mesomechanics, Budapest, Hungary, Sept. 25-28. 2012 Prediction of fatigue crack propagation in aluminum alloy with local yield strength gradient at the
More informationFatigue Crack Growth Analysis of Structural Components - the UniGrow Two-Parameter Driving Force Model
Fatigue Crack Growth Analysis of Structural Components - the UniGrow Two-Parameter Driving Force Model S. Mikheevskiy 1, G. Glinka 1 and D. Algera 2 1 University of Waterloo, Department of Mechanical Engineering,
More informationAvailable online at ScienceDirect. Procedia Engineering 86 (2014 ) 58 65
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 86 (2014 ) 58 65 1st International Conference on Structural Integrity, ICONS-2014 Influence of Nitrogen Content on the Evolution
More informationScienceDirect. The Effect of Heat Treatment and Aging Process on Microstructure and Mechanical Properties of A356 Aluminium Alloy Sections in Casting
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 97 (2014 ) 1676 1682 12th GLOBAL CONGRESS ON MANUFACTURING AND MANAGEMENT, GCMM 2014 The Effect of Heat Treatment and Aging
More informationIII Fatigue Models. 1. Will a crack nucleate? 2. Will it grow? 3. How fast will it grow?
III Fatigue Models 1. Will a crack nucleate? 2. Will it grow? 3. How fast will it grow? Outline Sources of knowledge Modeling Crack nucleation Non propagating cracks Crack growth AM 11/03 2 Source of knowledge
More informationAvailable online at ScienceDirect. 20th European Conference on Fracture (ECF20)
Available online at www.sciencedirect.com ScienceDirect Procedia Materials Science 3 ( 2014 ) 924 929 20th European Conference on Fracture (ECF20) Fatigue limit prediction of large scale cast aluminum
More informationAluminum Alloys GOTChA Chart
Aluminum Alloys GOTChA Chart Goals High Strength Intrinsically Corrosion Resistant Aluminum Alloys for Enhanced Readiness, Improved Performance and Lower Life Cycle Costs Objectives SCC improvements-alloy
More informationScienceDirect. Fatigue Behavior of Dissimilar Aluminum Alloy Spot Welds
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 114 (2015 ) 149 156 1st International Conference on Structural Integrity Fatigue Behavior of Dissimilar Aluminum Alloy Spot
More informationMechanical Properties
Mechanical Properties Elastic deformation Plastic deformation Fracture Fatigue Environmental crack growth Crack Instabilty ß σ T The critical crack length for given σ a a c = Q 2 K Ic σ a 2 a r ß a Sources
More informationScanning probe microscope observations of fatigue process in magnesium alloy AZ31 near the fatigue limit
Scripta Materialia 50 (2004) 429 434 www.actamat-journals.com Scanning probe microscope observations of fatigue process in magnesium alloy AZ31 near the fatigue limit Z.Y. Nan, S. Ishihara *, T. Goshima,
More informationFatigue strength properties of precipitation strengthening stainless steel A286 focused attention on small fatigue crack behaviour
Available online at www.sciencedirect.com Procedia Engineering 1 (211) 1973 1978 ICM11 Fatigue strength properties of precipitation strengthening stainless steel A286 focused attention on small fatigue
More informationThe Effect of Microstructure on Mechanical Properties of Forged 6061 Aluminum Alloy
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 1382 The Effect of Microstructure
More informationAvailable online at ScienceDirect. Procedia Engineering 100 (2015 ) 84 89
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 100 (2015 ) 84 89 25th DAAAM International Symposium on Intelligent Manufacturing and Automation, DAAAM 2014 Comparison of Mechanical
More informationCRACK GROWTH PREDICTIONS USING SEVERAL RETARDATION MODELS
CRACK GROWTH PREDICTIONS USING SEVERAL RETARDATION MODELS A. Brot and C. Matias Engineering Division Israel Aircraft Industries Ben-Gurion Airport, Israel E-Mail: abrot@iai.co.il ABSTRACT Under spectrum
More informationTensile Flow Behavior in Inconel 600 Alloy Sheet at Elevated Temperatures
Available online at www.sciencedirect.com Procedia Engineering 36 (212 ) 114 12 IUMRS-ICA 211 Tensile Flow Behavior in Inconel 6 Alloy Sheet at Elevated Temperatures Horng-Yu Wu a, Pin-Hou Sun b, Feng-Jun
More informationCreep failure Strain-time curve Effect of temperature and applied stress Factors reducing creep rate High-temperature alloys
Fatigue and Creep of Materials Prof. A.K.M.B. Rashid Department of MME BUET, Dhaka Fatigue failure Laboratory fatigue test The S-N Ncurve Fractography of fractured surface Factors improving fatigue life
More informationWHY DID IT BREAK? The Use of Microscopy in Failure Analysis
WHY DID IT BREAK? The Use of Microscopy in Failure Analysis David Taylor Professor of Materials Engineering Mechanical Engineering Dept. Trinity College Dublin How Things Break Mechanism Appearance Mechanical
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 informationAvailable online at ScienceDirect. Procedia Engineering 184 (2017 )
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 184 (2017 ) 418 422 Advances in Material & Processing Technologies Conference Development of Al-Zn-Cu Alloy for Low Voltage
More informationAN EVALUATION OF SEVERAL RETARDATION MODELS FOR CRACK GROWTH PREDICTION UNDER SPECTRUM LOADING
AN EVALUATION OF SEVERAL RETARDATION MODELS FOR CRACK GROWTH PREDICTION UNDER SPECTRUM LOADING A. Brot and C. Matias Engineering Division Israel Aircraft Industries Ben-Gurion Airport, Israel E-Mail: abrot@iai.co.il
More informationScienceDirect. Dieless forming of carbon fibre reinforced plastic parts using 3D printer
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 81 (2014 ) 1595 1600 11th International Conference on Technology of Plasticity, ICTP 2014, 19-24 October 2014, Nagoya Congress
More informationAvailable online at ScienceDirect. XVII International Colloquium on Mechanical Fatigue of Metals (ICMFM17)
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 74 ( 2014 ) 273 278 XVII International Colloquium on Mechanical Fatigue of Metals (ICMFM17) Shot peening intensity optimization
More informationAvailable online at ScienceDirect. Procedia Engineering 133 (2015 ) th Fatigue Design conference, Fatigue Design 2015
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 133 (2015 ) 465 476 6th Fatigue Design conference, Fatigue Design 2015 Fatigue Strength Improvement of Aluminum and High Strength
More informationAvailable online at Fatigue Fatigue in AISI 4340 steel thermal spray coating by HVOF for aeronautic application
Available online at www.sciencedirect.com Procedia Procedia Engineering Engineering 2 (2010) 00 (2009) 1617 1623 000 000 Procedia Engineering www.elsevier.com/locate/procedia Fatigue 2010 Fatigue in AISI
More informationAccepted Manuscript. Fatigue Crack Growth Behaviour and Life Prediction for 2324-T39 and T7451 Aluminium Alloys under Truncated Load Spectra
Accepted Manuscript Fatigue Crack Growth Behaviour and Life Prediction for 2324-T39 and 7050- T7451 Aluminium Alloys under Truncated Load Spectra Rui Bao, Xiang Zhang PII: S0142-1123(09)00361-2 DOI: 10.1016/j.ijfatigue.2009.12.010
More informationIntergranular Corrosion (IGC)
Intergranular Corrosion (IGC) Microstructure of metals and alloys is made up of grains (separated by grain boundaries) Intergranular corrosion is a localized attack along the grain boundaries, or immediately
More informationInfluence 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 informationFatigue Behavior of 2198-T8 Aluminum-lithium Alloy with Riveted Lap Joints
2nd Annual International Conference on Advanced Material Engineering (AME 2016) Fatigue Behavior of 2198-T8 Aluminum-lithium Alloy with Riveted Lap Joints An CHEN*, Shan-Shan LI, Fei XU and Deng-Ke DONG
More informationCorrosion-Fatigue Cracking in HY-80 and HY-130 Steels
Naval Research Laboratory Washington, DC 20375-5320 NRL/MR/6355--15-9584 Corrosion-Fatigue Cracking in HY-80 and HY-130 Steels P.S. Pao R.L. Holtz Multifunctional Materials Branch Materials Science and
More informationAnalysis of low cycle fatigue in AlMgSi aluminium alloys
Engineering Failure Analysis 11 (2004) 715 725 www.elsevier.com/locate/engfailanal Analysis of low cycle fatigue in AlMgSi aluminium alloys L.P. Borrego a, *, L.M. Abreu b, J.M. Costa c, J.M. Ferreira
More informationScienceDirect. Cumulative damage of high-strength cast iron alloys for automotive applications
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 101 (2015 ) 440 449 3rd International Conference on Material and Component Performance under Variable Amplitude Loading, VAL2015
More informationAvailable online at ScienceDirect. Procedia Engineering 79 (2014 )
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 79 (2014 ) 212 217 37th National Conference on Theoretical and Applied Mechanics (37th NCTAM 2013) & The 1st International Conference
More informationCryorolling of Al 5083 Alloy: Microstructure and Mechanical Properties at Various Post Annealing Temperatures
International Journal of Current Science, Engineering & Technology Original Research Article Open Access AMCT 2017 Malaysia Special Issue ISSN : 2581-4311 Cryorolling of Al 5083 Alloy: Microstructure and
More informationEffects of asymmetric creep-ageing behaviour on springback of AA2050-T34 after creep age forming
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 207 (2017) 287 292 International Conference on the Technology of Plasticity, ICTP 2017, 17-22 September 2017, Cambridge, United
More informationCorrosion Fatigue Performance in Simulated Sea Water of Aluminium 6061-T651 Welded using ER4043 Filler Wire
Corrosion Fatigue Performance in Simulated Sea Water of Aluminium 6061-T651 Welded using ER4043 Filler Wire 1,a and Madeleine du Toit 2,b 1 CSIR/Pretoria, South Africa 2 University of Pretoria, South Africa
More informationAvailable online at ScienceDirect. Procedia CIRP 18 (2014 ) 57 61
Available online at www.sciencedirect.com ScienceDirect Procedia CIRP 18 (214 ) 57 61 International Conference on Manufacture of Lightweight Components ManuLight214 Upgrading in Mechanical Properties of
More informationMacro-Micro Scale Observation of Cyclic Hardening-Softening and Precipitates Zone of C460
IOSR Journal of Engineering (IOSRJEN) e-issn: 2250-3021, p-issn: 2278-8719 Vol. 3, Issue 6 (June. 2013), V1 PP 34-39 Macro-Micro Scale Observation of Cyclic Hardening-Softening and Precipitates Zone of
More informationThe Effect of Crystallographic Texture on the Wrap Bendability in AA5754-O Temper Sheet Alloy
Proceedings of the 12th International Conference on Aluminium Alloys, September 5-9, 2010, Yokohama, Japan 2010 The Japan Institute of Light Metals pp. 607-612 607 The Effect of Crystallographic Texture
More informationInternal Friction in Commercial Aluminium Alloy AW-2007
Available online at www.sciencedirect.com Procedia Engineering 10 (2011) 1226 1231 ICM11 Internal Friction in Commercial Aluminium Alloy AW-2007 Peter Pal ek a, Jakub Porub an a, *, Dalibor Blažek a and
More informationFracture. Brittle vs. Ductile Fracture Ductile materials more plastic deformation and energy absorption (toughness) before fracture.
1- Fracture Fracture: Separation of a body into pieces due to stress, at temperatures below the melting point. Steps in fracture: 1-Crack formation 2-Crack propagation There are two modes of fracture depending
More informationOn the Long-Term Stability of 6013-T6 Aluminium Alloy Sheet
Proceedings of the 9 th International Conference on Aluminium Alloys (2004) 986 Edited by J.F. Nie, A.J. Morton and B.C. Muddle Institute of Materials Engineering Australasia Ltd On the Long-Term Stability
More informationAvailable online at ScienceDirect. Procedia Materials Science 12 (2016 ) 42 47
Available online at www.sciencedirect.com ScienceDirect Procedia Materials Science 12 (2016 ) 42 47 6th New Methods of Damage and Failure Analysis of Structural Parts [MDFA] Cyclic Bending Deformation
More informationModelling of Fiber Metal Laminate (FML) Composite under Block Loading Using the Stiffness Degradation Model
Modelling of Fiber Metal Laminate (FML) Composite under Block Loading Using the Stiffness Degradation Model S. ABDULLAH, A.FAHRUDDIN, S. JUNAIDY, M.Z. OMAR AND M.Z. NUAWI Department of Mechanical and Materials
More informationEffect of Modified AA5356 Filler on Corrosion Behavior of AA6061 Alloy GTA Welds
Vol.2, Issue.6, Nov-Dec. 2012 pp-4429-4433 ISSN: 2249-6645 Effect of Modified AA5356 Filler on Corrosion Behavior of AA6061 Alloy GTA Welds 1 N. Ramanaiah 2 B. Balakrishna, 3 K. Prasad Rao 1 Professor
More informationAvailable online at ScienceDirect. Procedia Engineering 133 (2015 ) th Fatigue Design conference, Fatigue Design 2015
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 133 (2015 ) 477 484 6th Fatigue Design conference, Fatigue Design 2015 Fatigue strength of HFMI-treated and stress-relief annealed
More informationThin Products < 75 mm 7055-T7751. Strength (MPa) 500. Thick Products mm Year First Used in Aircraft
Strength and (Extrinsic) Corrosion Resistance Improvements in New 7XXX-Series Alloys - Relative to 7075-T651 All Alloys Still Need Corrosion Protection Schemes 700 650 600 Corrosion Resistance Low Medium
More informationG. Silva, B. Rivolta, R. Gerosa & U. Derudi
Study of the SCC Behavior of 7075 Aluminum Alloy After One-Step Aging at 163 C G. Silva, B. Rivolta, R. Gerosa & U. Derudi Journal of Materials Engineering and Performance ISSN 1059-9495 J. of Materi Eng
More informationThe Microstructure and Mechanical Properties of Inconel 718 Fine Grain Ring Forging
The Microstructure and Mechanical Properties of Inconel 718 Fine Grain Ring Forging Zixing Wang 1, Dianhua Zhou 1, Qun Deng 2, Guosheng Chen 1, Wei Xie 1 1 Special Steel R & D Center of Special Steel Business
More informationEffect of constituent-particles distribution on mechanical behavior of an AlMgSi alloy
IOP Conference Series: Materials Science and Engineering OPEN ACCESS Effect of constituent-particles distribution on mechanical behavior of an AlMgSi alloy Recent citations - Fatigue crack growth in an
More informationInternational Journal of Fatigue
International Journal of Fatigue 3 (009) 88 836 Contents lists available at ScienceDirect International Journal of Fatigue journal homepage: www.elsevier.com/locate/ijfatigue Elastic plastic fatigue crack
More informationArch. Metall. Mater. 62 (2017), 3,
Arch. Metall. Mater. 62 (2017), 3, 1615-1624 DOI: 10.1515/amm-2017-0247 M. UHRÍČIK* #, P. PALČEK*, M. CHALUPOVÁ*, M. ORAVCOVÁ*, M. FRKÁŇ* THE INFLUENCE OF THE STRUCTURE ON THE FATIGUE PROPERTIES OF Al-Mg
More informationInvestigation of strength characteristics of aluminum alloy under dynamic tension
Journal of Physics: Conference Series PAPER OPEN ACCESS Investigation of strength characteristics of aluminum alloy under dynamic tension To cite this article: A D Evstifeev 2018 J. Phys.: Conf. Ser. 991
More informationExtreme value statistical analysis to determine the endurance limit of a 1045 induction hardened steel alloy
Available online at www.sciencedirect.com Procedia Engineering 10 (2011) 607 612 ICM11 Extreme value statistical analysis to determine the endurance limit of a 1045 induction hardened steel alloy A. B.
More informationAvailable online at Fatigue Influence of Anodizing Process on Fatigue Life of Machined Aluminium Alloy
Available online at www.sciencedirect.com Procedia Procedia Engineering Engineering 2 (2010) 00 (2009) 1015 1024 000 000 Procedia Engineering www.elsevier.com/locate/procedia Fatigue 2010 Influence of
More informationEFFECT OF MEAN STRESS ON SHORT CRACK GROWTH IN FATIGUED 316L STAINLESS STEEL
EFFECT OF MEAN STRESS ON SHORT CRACK GROWTH IN FATIGUED 316L STAINLESS STEEL Karel OBRTLÍK Jiří MAN Jaroslav POLÁK Institute of Physics of Materials, Academy of Sciences of the Czech Republic Žižkova 22,
More informationSchedule of Accreditation issued by United Kingdom Accreditation Service 2 Pine Trees, Chertsey Lane, Staines-upon-Thames, TW18 3HR, UK
2 Pine Trees, Chertsey Lane, Staines-upon-Thames, TW18 3HR, UK Hareness Circle Industrial Estate Aberdeen Scotland AB12 3LY Contact: Mrs D McAdam Tel: +44 (0)1224-890020 Fax: +44 (0)1224-890220 E-Mail:
More informationADVANCES in NATURAL and APPLIED SCIENCES
ADVANCES in NATURAL and APPLIED SCIENCES ISSN: 995-0772 Published BYAENSI Publication EISSN: 998-090 http://www.aensiweb.com/anas 207 June (8): pages 3-36 Open Access Journal Fatigue Behavior of Aluminium
More informationSMM 3622 Materials Technology 3.1 Fatigue
SMM 3622 Materials Technology 3.1 Fatigue ISSUES TO ADDRESS... MECHANICAL FAILURE FATIGUE What is fatigue? Types of fatigue loading? Empirical data Estimating endurance/fatigue strength Strategies for
More informationOn the Early Initiation of Fatigue Cracks in the High Cycle Regime
On the Early Initiation of Fatigue Cracks in the High Cycle Regime S. Ishihara 1, A. J. McEvily 2 1 Dept. of Mechanical Engineering, Univ. of Toyama, Toyama, Japan; 2 Dept. of Materials Science and Engineering,
More informationFinite Element Analysis of Drilling of Titanium Alloy
Available online at www.sciencedirect.com Procedia Engineering 10 (2011) 1877 1882 ICM11 Finite Element Analysis of Drilling of Titanium Alloy Ozden Isbilir a, Elaheh Ghassemieh a a Department of Mechanical
More informationAvailable online at ScienceDirect. Procedia Materials Science 12 (2016 ) Diffusion of hydrogen in the TRIP 800 steel
Available online at www.sciencedirect.com ScienceDirect Procedia Materials Science 12 (2016 ) 66 71 6 th New Methods of Damage and Failure Analysis of Structural Parts [MDFA] Diffusion of hydrogen in the
More informationImprovement of Mechanical Properties of 7475 Based Aluminum Alloy Sheets by Controlled Warm Rolling
Materials Transactions, Vol. 45, No. 1 (24) pp. 69 to 74 #24 The Japan Institute of Light Metals Improvement of Mechanical Properties of 7475 Based Aluminum Alloy Sheets by Controlled Warm Rolling Hiroki
More informationHigh-cycle fatigue characteristics of squeezed cast aluminum alloy smooth specimens cut from car wheels
High Performance Structure and Materials VI 95 High-cycle fatigue characteristics of squeezed cast aluminum alloy smooth specimens cut from car wheels M. Goto 1, N. Teshima 2, S. Z. Han 3, K. Euh 3 & T.
More informationFatigue life estimation of Aluminium Alloy reinforced with SiC particulates in annealed conditions
18 TH INTERNATIONAL CONFERENCE ON COMPOSITE MATERIALS Abstract Fatigue life estimation of Aluminium Alloy reinforced with SiC particulates in annealed conditions D. P. Myriounis, S.T.Hasan Sheffield Hallam
More informationAvailable online at ScienceDirect. Procedia Engineering 81 (2014 )
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 81 (2014 ) 2494 2498 11th International Conference on Technology of Plasticity, ICTP 2014, 19-24 October 2014, Nagoya Congress
More informationLOW CYCLE FATIGUE AND FATIGUE GROWTH BEHAVIORS OF ALLOY IN7 18. J. 2. Xie. Institute of Aeronautical Materials Beijing , P. R. China.
LOW CYCLE FATIGUE AND FATIGUE CRACK GROWTH BEHAVIORS OF ALLOY IN7 18 J. 2. Xie Institute of Aeronautical Materials Beijing 100095, P. R. China Abstract The low cycle fatigue (LCF) behavior and fatigue
More informationStructures should be designed in such a way that they do not fail during their expected / predicted safe-life
Structures Any structure is built for a particular purpose Aircraft, Ship, Bus, Train Oil Platforms Bridgesand Buildings Towers for Wind energy, Electricaltransmission etc. Structures and Materials Structuresare
More informationSchedule of Accreditation issued by United Kingdom Accreditation Service 2 Pine Trees, Chertsey Lane, Staines-upon-Thames, TW18 3HR, UK
2 Pine Trees, Chertsey Lane, Staines-upon-Thames, TW18 3HR, UK 19 Wildmere Road Banbury Oxfordshire OX16 3JU Contact: Mr J Guntrip Tel: +44 (0)1295 261211 Fax: +44 (0)1295 263096 E-Mail: qualityuk@wmtr.com
More informationFracture Analysis of a Crack Propagating in Aluminium-7% Silicon Alloy Casting
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 672 Fracture Analysis of a
More informationFatigue Properties of Nitrided Alloy 718 at Elevated Temperature
Copyright 2010 Tech Science Press SL, vol.3, no.3, pp.191-199, 2010 Fatigue Properties of Nitrided Alloy 718 at Elevated Temperature N. Kawagoishi 1, A. Ohkubo 2, S. Yoshimi 3, K. Yamane 4 and K. Morino
More informationHIGH CYCLE FATIGUE OF AN ORTHORHOMBIC TI-22AL- 25NB INTERMETALLIC ALLOY
HIGH CYCLE FATIGUE OF AN ORTHORHOMBIC TI-22AL- 25NB INTERMETALLIC ALLOY Abstract S.Q.Li, Y.J.Cheng, J.W.Zhang and X.B.Liang Central Iron & Steel Research Institute (CISRI) No.76 Xueyuan Nanlu, Beijing
More informationAvailable online at ScienceDirect. Procedia Engineering 160 (2016 ) 61 68
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 160 (2016 ) 61 68 XVIII International Colloquium on Mechanical Fatigue of Metals (ICMFM XVIII) Influence of size effect and
More informationGlobal Journal of Engineering Science and Research Management
DIFFUSION BONDING OF AL ALLOY USING DIFFERENT IINTERLAYERS Assist. Prof. Dr. Ahmed A. Akbar*, Samer K. Khaleel * Asst. Prof. Dr. at University of Technology, Production Engineering and Metallurgy, Iraq
More informationScienceDirect. Failure Analysis on Fracture of a S135 Drill Pipe
Available online at www.sciencedirect.com ScienceDirect Procedia Materials Science 3 ( 2014 ) 447 453 20th European Conference on Fracture (ECF20) Failure Analysis on Fracture of a S135 Drill Pipe Han
More informationChapter 6 Mechanical Properties
Engineering Materials MECH 390 Tutorial 2 Chapter 6 Mechanical Properties Chapter 3-1 6.14:A cylindrical specimen of steel having a diameter of 15.2 mm and length of 250 mm is deformed elastically in tension
More informationPROPERTIES OF AW 5059 ALUMINIUM ALLOY JOINTS WELDED BY MIG AND FRICTION STIR WELDING (FSW)
Journal of KONES Powertrain and Transport, Vol. 20, No. 3 2013 PROPERTIES OF AW 5059 ALUMINIUM ALLOY JOINTS WELDED BY MIG AND FRICTION STIR WELDING (FSW) Miros aw Czechowski Gdynia Maritime University
More informationThe effect of ER4043 and ER5356 filler metal on welded Al 7075 by metal inert gas welding
This paper is part of the Proceedings of the 2 International Conference on nd High Performance and Optimum Design of Structures and Materials (HPSM 2016) www.witconferences.com The effect of ER4043 and
More informationFatigue Crack Growth Rate Measurement in Welded Joints
Fatigue Crack Growth Rate Measurement in Welded Joints P. Žlábek 1 and V. Mentl 2 1 West-Bohemian University Pilsen, Czech republic, zlabek@kme.zcu.cz 2 SKODA Research Ltd., Pilsen, Czech Republic, vaclav.mentl@skoda.cz
More informationAvailable online at Fatigue Received 4 March 2010; revised 9 March 2010; accepted 15 March 2010
Available online at www.sciencedirect.com Procedia Procedia Engineering Engineering 2 (2010) 00 (2009) 697 705 000 000 Procedia Engineering www.elsevier.com/locate/procedia Fatigue 2010 Fatigue behaviour
More informationEVALUATION OF FATIGUE PROPERTIES OF NICKEL BASED SUPERALLOY MAR 247 WITH ALUMINIDE COATING AND CRACK DETECTION BY NON DESTRUCTIVE TECHNIQUES
Recent Advances in Mechanics and Materials in Design PAPER REF: (5661) EVALUATION OF FATIGUE PROPERTIES OF NICKEL BASED SUPERALLOY MAR 247 WITH ALUMINIDE COATING AND CRACK DETECTION BY NON DESTRUCTIVE
More informationMATERIALS SCIENCE-44 Which point on the stress-strain curve shown gives the ultimate stress?
MATERIALS SCIENCE 43 Which of the following statements is FALSE? (A) The surface energy of a liquid tends toward a minimum. (B) The surface energy is the work required to create a unit area of additional
More informationObservations of Corrosion Fatigue Crack Initiation Processes in Metals by Means of AFM
Materials Science Research International, Special Technical Publication 1, pp.11-16 (21) General Paper Observations of Corrosion Fatigue Crack Initiation Processes in Metals by Means of AFM Yoshikazu NAKAI,
More informationManufacturing influences on the fatigue properties of quenched and tempered SAE 4140 specimens
Available online at www.sciencedirect.com Procedia Engineering 10 (2011) 1184 1189 ICM11 Manufacturing influences on the fatigue properties of quenched and tempered SAE 4140 specimens M. Klein*,P. Starke,
More informationAvailable online at ScienceDirect. Procedia Engineering 81 (2014 )
Available online at www.sciencedirect.com ScienceDirect Procedia Engineering 81 (014 ) 730 735 11th International Conference on Technology of Plasticity, ICTP 014, 19-4 October 014, Nagoya Congress Center,
More informationImpact Toughness of Weldments in Al Mg Si Alloys
Materials Transactions, Vol. 43, No. 6 (2002) pp. 1381 to 1389 c 2002 The Japan Institute of Metals Impact Toughness of Weldments in Al Mg Si Alloys Victor Alexandru Mosneaga, Tohru Mizutani, Toshiro Kobayashi
More informationIMPROVEMENT OF MECHANICAL PROPERTIES IN FE-MN-TI STEEL BY ALLOYING WITH CR AND MO , Tehran, Iran. Tabriz, Iran
IMPROVEMENT OF MECHANICAL PROPERTIES IN FE-MN-TI STEEL BY ALLOYING WITH CR AND MO M. Nili-Ahmadabadi a, S. Hossein Nedjad b, M. Sadeghi a and H. Shirazi a a Deptartment of Metallurgy and Materials Engineering,
More informationEffect of Ti Addition and Mechanical Alloying on Mechanical Properties of an AA7050 Extruded Aluminium Alloy. Brazil
Effect of Ti Addition and Mechanical Alloying on Mechanical Properties of an AA7050 Extruded Aluminium Alloy K. R. Cardoso 1, V. Sinka 1, A. García Escorial 2, M. Lieblich 2 1 IP&D UNIVAP, Av. Shishima
More informationEFFECT OF LOAD ASYMMETRY AND MICROSTRUCTURE ORIENTATION ON FATIGUE CRACK GROWTH IN STABLE AND THRESHOLD REGIONS IN AN AIRCRAFT AL 2124-T851 ALLOY
EFFECT OF LOAD ASYMMETRY AND MICROSTRUCTURE ORIENTATION ON FATIGUE CRACK GROWTH IN STABLE AND THRESHOLD REGIONS IN AN AIRCRAFT AL 2124-T851 ALLOY Ivo ČERNÝ SVÚM a.s., Podnikatelská 565, 19011 Praha 9,
More informationGENERATING FATIGUE CRACK GROWTH THRESHOLDS WITH CONSTANT AMPLITUDE LOADS
GENERATING FATIGUE CRACK GROWTH THRESHOLDS WITH CONSTANT AMPLITUDE LOADS Scott C. Forth *, James C. Newman, Jr. + and Royce G. Forman The fatigue crack growth threshold, defining crack growth as either
More informationEffect of thermal exposure on mechanical properties hypo eutectic aerospace grade aluminium-silicon alloy
IOP Conference Series: Materials Science and Engineering PAPER OPEN ACCESS Effect of thermal exposure on mechanical properties hypo eutectic aerospace grade aluminium-silicon alloy To cite this article:
More information