Superplastic Behavior of AZ31B Magnesium Alloy Processed by Equal Channel Angular Pressing (ECAP) | ||
| Engineering and Technology Journal | ||
| Article 6, Volume 32, Issue 8, August 2014, Pages 1958-1970 PDF (749.06 K) | ||
| DOI: 10.30684/etj.32.8A6 | ||
| Authors | ||
| Ziad Tariq Madhloom; Azal R. Ismail | ||
| Abstract | ||
| AZ31B magnesium alloy with initial grain size of 11.2 µm was grain refined using Equal Channel Angular Pressing (ECAP) the alloy was ECAP-processed up to 5-times at 473 K. As a result, the grains are refined to 2.1 µm after three ECAP passes, the elongation was increased to 84 % at 473 K and strain rate of 1×10-4 s-1 after ECAP up to 5-passes,. Large fracture elongations of 261% are obtained at 623 K and strain rate 2.45×10-4 s-1 for specimen made from 3 ECAR passes compared to 183% for the as received material. Also the superplastic properties of the ECAP-processed specimens were investigated at 623 K and the strain rate ranges from 2.45×10-4 s-1 to 1.2×10-3 s-1. The strain rate sensitivity were determined to be 0.33 | ||
| Keywords | ||
| Superplasticity; Magnesium alloy; Severe plastic deformation | ||
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