Mechanical properties of a two-phase alloy Mg-8 percent Li-1 percent Al processed by equal channel angular pressing

摘要

The microstructural evolution and room temperature tensile properties of Mg-8 percent Li-l percent Al alloy processed by equal channel angular pressing (ECAP) at 403 K were investigated. It was found that the strength could be improved pass by pass. The elongation-to-failure decreased dramatically after the first ECAP pass, but could be improved pass by pass during the subsequent ECAP procedure. The microstructure analysis gave the explanations for these phenomena.