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Stress Corrosion Cracking Behavior of Fine-Grained AZ61 Magnesium Alloys Processed by Equal-Channel Angular Pressing

College of Mechanics and Materials, Hohai University, Nanjing 210098, China
Suqian Institute, Hohai University, Suqian 223800, China
Author to whom correspondence should be addressed.
Metals 2017, 7(9), 343;
Received: 21 July 2017 / Revised: 25 August 2017 / Accepted: 25 August 2017 / Published: 4 September 2017
PDF [4429 KB, uploaded 4 September 2017]


The effect of equal-channel angular pressing (ECAP) on stress corrosion cracking (SCC) behavior of a cast AZ61 Mg alloy was investigated in distilled water (DW) using the slow strain rate tensile test (SSRT) at a strain rate of 1 × 10−6 s−1. The fine-grained alloy after ECAP showed a greater SCC susceptibility but a higher ultimate tensile strength, compared with the as-cast counterpart. The results were attributed to refined grains, high-density dislocations and increased proportion of high-angle grain boundaries induced by severe plastic deformation, as well as isolated fine β-phase particles transiting from net-like β-phase. View Full-Text
Keywords: magnesium alloy; stress corrosion cracking; ECAP; fine-grained magnesium alloy; stress corrosion cracking; ECAP; fine-grained

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Xie, Q.; Ma, A.; Jiang, J.; Cheng, Z.; Song, D.; Yuan, Y.; Liu, H. Stress Corrosion Cracking Behavior of Fine-Grained AZ61 Magnesium Alloys Processed by Equal-Channel Angular Pressing. Metals 2017, 7, 343.

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