Dynamic Deformation Behavior of ECAPed AZ31 Magnesium Alloy

Abstract:

Equal channel angular pressing (ECAP) has been widely used for grain refinement in many alloys. In this article, the major emphasis was on the effect of grain size, temperature and strain rate on dynamic behavior of ECAPed AZ31. The dynamic mechanical properties of 6 pass and 8 pass ECAPed AZ31 were tested by split hopkinson pressing bar (SHPB) at wide temperatures range. At dynamic loading conditions, the ECAPed AZ31 shows strong strain hardening properties. The strain hardening rates decrease due to more slip systems’ opening with the increase of temperature. With the grain refinement, the fine-grain size and temperature show strong effect on the strain rate sensitivity.

• Periodical: Applied Mechanics and Materials (Volume 566)
• Pages: 104-109
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.566.104
• Online since: June 2014
• Authors: Hai Tao Hu*, Feng Zhao, Ying Gang Miao, Tao Suo, Qiong Deng, Yu Long Li
• Keywords: Dynamic Deformation, ECAP, Magnesium Alloy, Strain Hardening, Strain Rate Sensitivity

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