High performance die castings are urgently expected to be used as structural components subjected to dynamic loading. Therefore, tensile properties, fatigue, and corrosion-fatigue behavior of automotive die cast AlMg5Si2Mn alloy are studied in the current work. The results indicate that the tensile strength and yield strength of the as-cast specimens are obviously lower than those of the age-treated specimens, while the elongation decreases with increasing aging time. Neutral corrosive environment (3.5% NaCl solution) dramatically decreases the fatigue limits from 75 to 50 MPa. Fatigue lives of the directly corroded and precorroded specimens are close to each other. The values of material constants m and C are in the range of 5.756–5.874 and 2.421 × 10−10 to 4.285 × 10−9, respectively. Obscure fatigue striations and featureless facets are observed in crack propagation regions. Anodic dissolution is dominantly responsible for the premature crack initiation and stress corrosion cracking leading to the formation of fractured α-Al matrix.
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D. Brungs: Light weight design with light metal castings. Mater. Des. 18 (4–6), 285 (1997).
G.S. Cole and A.M. Sherman: Light weight materials for automotive applications. Mater. Charact. 35 (1), 3 (1995).
H. Kaufmann and P.J. Uggowitzer: Fundamentals of the new rheocasting process for magnesium alloys. Adv. Eng. Mater. 3 (12), 963 (2001).
H. Kaufmann and P.J. Uggowitzer: Metallurgy and Processing of High-Integrity Light Metal Pressure Castings (Schiele & Schön, Germany, 2007).
Z. Hu, L. Wan, S. Wu, H. Wu, and X. Liu: Microstructure and mechanical properties of high strength die-casting Al–Mg–Si–Mn alloy. Mater. Des. 46, 451 (2013).
S. Ji, D. Watson, Z. Fan, and M. White: Development of a super ductile diecast Al–Mg–Si alloy. Mater. Sci. Eng., A 556, 824 (2012).
S. Otarawanna, C.M. Gourlay, H.I. Laukli, and A.K. Dahle: The thickness of defect bands in high-pressure die castings. Mater. Charact. 12 (60), 1432 (2009).
S. Otarawanna, C.M. Gourlay, H.I. Laukli, and A.K. Dahle: Formation of the surface layer in hypoeutectic Al-alloy high-pressure die castings. Mater. Chem. Phys. 130 (1–2), 254 (2011).
L. Wan, Z. Hu, S. Wu, and X. Liu: Mechanical properties and fatigue behavior of vacuum-assist die cast AlMgSiMn alloy. Mater. Sci. Eng., A 576, 252 (2013).
Z. Hu, L. Wan, S. Lü, P. Zhu, and S. Wu: Research on the microstructure, fatigue and corrosion behavior of permanent mold and die cast aluminum alloy. Mater. Des. 55, 353 (2014).
R.M. Chlistovsky, P.J. Heffernan, and D.L. DuQuesnay: Corrosion-fatigue behaviour of 7075-T651 aluminum alloy subjected to periodic overloads. Int. J. Fatigue 29 (9–11), 1941 (2007).
U. Zupanc and J. Grum: Effect of pitting corrosion on fatigue performance of shot-peened aluminium alloy 7075-T651. J. Mater. Process. Technol. 210 (9), 1197 (2010).
K. Jones and D.W. Hoeppner: Prior corrosion and fatigue of 2024-T3 aluminum alloy. Corros. Sci. 48 (10), 3109 (2006).
P. Paris and F. Erdogan: A critical analysis of crack propagation laws. J. Basic Eng. 4 (85), 528 (1963).
S. Suresh: Fatigue of Materials (Cambridge University Press, England, 1991); pp. 95.
D.A. Lados, D. Apelian, P.E. Jones, and J.F. Major: Microstructural mechanisms controlling fatigue crack growth in Al–Si–Mg cast alloys. Mater. Sci. Eng., A 468–470, 237 (2007).
P. Venkateswaran, S. Ganesh Sundara Raman, S.D. Pathak, Y. Miyashita, and Y. Mutoh: Fatigue crack growth behaviour of a die-cast magnesium alloy AZ91D. Mater. Lett. 58 (20), 2525 (2004).
W. Elber: Fatigue crack closure under cyclic tension. Eng. Fract. Mech. 2 (1), 37 (1970).
J.Z. Yi, Y.X. Gao, P.D. Lee, and T.C. Lindley: Effect of Fe-content on fatigue crack initiation and propagation in a cast aluminum–silicon alloy (A356–T6). Mater. Sci. Eng., A 386 (1–2), 396 (2004).
C-K. Lin and S-T. Yang: Corrosion fatigue behavior of 7050 aluminum alloys in different tempers. Eng. Fract. Mech. 59 (6), 779 (1998).
C. Menzemer and T.S. Srivatsan: The effect of environment on fatigue crack growth behavior of aluminum alloy 5456. Mater. Sci. Eng., A 271 (1–2), 188 (1999).
A. Hartman: On the effect of oxygen and water vapor on the propagation of fatigue cracks in 2024-T3 alclad sheet. Int. J. Fract. Mech. 1 (3), 167 (1965).
D.A. Meyn: Fractographic diagnosis of stress corrosion cracking in Al-Zn-Mg alloys. Corrosion 26 (10), 427 (1970).
C. Vargel: Corrosion of Aluminium (Elsevier Science, England, 2004); pp. 67.
This work was funded by Project 2012A090300016 supported by Guangdong Provincial Department of Science and Technology, China. Authors would like to express thanks to Material Institution of CAEP (China Academy of Engineering Physics). The authors would also like to express their appreciation to the Analytical and Testing Center, Huazhong University of Science and Technology.
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Hu, Z., Wu, S. Tensile, fatigue, and corrosion fatigue behavior of high performance die cast aluminum alloy. Journal of Materials Research 30, 833–840 (2015). https://doi.org/10.1557/jmr.2015.45