College;
of;
Materials;
Science;
and;
Engineering,;
Taiyuan;
University;
of;
Technology,;
Taiyuan;
030024,;
China;
Key;
Laboratory;
of;
Interface;
Science;
and;
Engineering;
in;
Advanced;
Materials,;
Ministry;
of;
Education,;
Taiyuan;
University;
of;
Technology,;
Taiyuan;
030024,;
China;
等通道转角挤压; 力学性能; 变形加工; 镁合金; 显微组织; 超细晶; 断裂伸长率; ECAP;