抄録
Superplasticity of polycrystalline metallic materials is the phenomenon that shows hundreds to thousands of percents of large plastic deformation without necking in a steady state of low stress, under some specific thermo-mechanical conditions (some limited ranges of high temperature and low strain rate). In this research, the superplastic deformation of the magnesium alloy (AZ31Mg alloy) which is super lightweight but hard to process was investigated by the microscopic observation of microstructure after several kinds of loading. In this paper, the obtained results are shown and discussed.
