Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1574302 | Materials Science and Engineering: A | 2015 | 4 Pages |
Abstract
Homogenization treatment and equal channel angular pressing was applied to Mg–Y–Nd–Zr alloy cast ingot. Uniform grains with a grain size of ~1.5 μm and spherical secondary-phase preferentially located at the grain boundaries were obtained. Excellent high-strain rate superplasticity of 860% and 960% was achieved at 500 °C, 1×10−1 s−1 and 475 °C, 2×10−2 s−1, respectively, for the first time such a high-strain rate superplasticity was achieved in magnesium alloys processed by ECAP. The maximum elongation of 1120% was achieved at 475 °C, 3×10−3 s−1. They were attributed to the thermal stability of uniform fine-grain microstructure and the coordination function of secondary-phase.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Zhixin Kang, Lianli Zhou, Junyi Zhang,