Abstract
MIG welded Al-5083 alloy was investigated to study the effect of weld groove angle (70° and 90°), welding passes and filler-wire material (Al-5183 and Al-5.8%Mg) on its fatigue properties under mean stress. No significant difference of these parameters could be observed on the fatigue lives but the fatigue lives as well as the endurance limit get reduced when R-ratio was increased. A non-monotonic variation in slopes of S-N curves was observed: first increased and then decreased. Walker’s model, a popular fatigue model, was tested using the experimental data but it did not give best results. Thus, a new model was proposed with best ability to capture mean stress effect and predict fatigue lives. Most of the fatigue failures at low R-ratios (<0.1) occurred from surface while for higher R-ratios (>0.1), defect-induced (gas/shrinkage porosity) failures were dominant. The possible reasons for this change in damage mechanism are discussed.
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References
M. Couper, A. Neeson, J. Griffiths, “Casting defects and the fatigue behavior of an aluminum casting alloy”, Fatigue & Fracture of Engineering Materials & structures Vol. 13(3), pp. 213–227, 1990
Q.G. Wang, D. Apelian, D.A. Lados, “Fatigue behavior of A356-T6 aluminum cast alloys. Part I. Effect of casting defects”, Journal of Light Metals Vol. 1(1), pp. 73–84, 2001
Y. Murakami, Metal Fatigue: Effect of small defects and nonmetallic inclusions, 2002
Z. Lei, Y. Hong, J. Xie, C. Sun, A. Zhao, “Effects of inclusion size and location on very-high-cycle fatigue behavior for high strength steels”, Material Science and Engineering A Vol. 558, pp. 234–241, 2012
K. Walker, “The effect of stress ratio during crack propagation and fatigue for 2024-T3 and 7075-T6 aluminum, Effects of Environment and Complex Load History on Fatigue Life”, ASTM STP 462, West Conshohocken, PA, pp. 1–14, 1970
V. Gaur, V. Doquet, E. Persent, C. Mareau, E. Roguet, J. Kittel, “Surface versus internal fatigue crack initiation in steel: Influence of mean stress”, International Journal of Fatigue Vol. 82, pp. 437–448, 2015
K. Yang, C. He, Q. Huang, Z. Yong Huang, C. Wang, Q. Wang, Y. Jie Liu, B. Zhong, “Very high cycle fatigue behaviors of a turbine engine blade alloy at various stress ratios”, International Journal of Fatigue Vol. 99, pp. 35–43, 2016
K.J. Miller, “The behavior of short fatigue cracks and their initiation, Part I - A review of two recent books”, Fatigue & Fracture of Engineering Materials and Structures Vol. 10(1), pp. 75–91, 1987
A. McEvily, “The growth of short fatigue cracks: A review”, Transactions on Engineering Sciences Col. 13, ISSN 1743–3533, 1996
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Gaur, V., Enoki, M., Okada, T., Yomogida, S. (2018). Influence of Weld Parameters and Filler-Wire on Fatigue Behavior of MIG-Welded Al-5083 Alloy. In: Ambriz, R., Jaramillo, D., Plascencia, G., Nait Abdelaziz, M. (eds) Proceedings of the 17th International Conference on New Trends in Fatigue and Fracture. NT2F 2017. Springer, Cham. https://doi.org/10.1007/978-3-319-70365-7_24
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DOI: https://doi.org/10.1007/978-3-319-70365-7_24
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