Influence of hot extrusion on microstructure and mechanical properties of AZ31 magnesium alloy

被引：0
|
作者：
Wang Ling [1 ]
Tian Su-gui [1 ]
Meng Fan-lai [1 ]
Du Hong-qiang [1 ]
机构：
[1] Shenyang Univ Technol, Coll Mat Sci & Engn, Shenyang 110023, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2006年 / 16卷
关键词：
AZ31 magnesium alloy; hot extrusion; mechanical properties; recrystallization; deformation features;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Extrusion treatment is a common method to refine the grain size and improve the mechanical properties of metal material. The influence of hot extrusion on microstructure and mechanical properties of AZ31 magnesium alloy was investigated. The results chow that the mechanical properties of A731 alloy are obviously improved by extrusion treatment. The ultimate tensile strength (UTS) of AZ31 alloy at room temperature is measured to be 222 MPa, and is enhanced to 265.8 MPa after extrusion at 420 degrees C. The yield tensile strength (YTS) of A731 alloy at room temperature is measured to be 84 MPa, and is enhanced to 201 MPa after extrusion at 420 degrees C. The effective improvements on mechanical properties result from the formation of the finer grains during extrusion and the finer particles precipitated by age treatment. The features of the microstructure evolution during hot extruded of AZ31 alloy are dislocation slipping on the matrix and occurrence of the dynamic recrystallization.
引用
收藏
页码：S1770 / S1773
页数：4
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