Microstructure Evolution of AZ31 Mg Alloy during Change Channel Angular Extrusion

被引：4
|
作者：
Liu Yu [1 ,2 ]
Liu Tianmo [2 ]
机构：
[1] Nucl Power Inst China, Natl Key Lab Nucl Fuel & Mat, Chengdu 610041, Peoples R China
[2] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400045, Peoples R China
来源：
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION | 2011年 / 26卷 / 04期
关键词：
AZ31 Mg alloy; grain refinement; change channel angular extrusion (CCAE); continuous dynamic recovery and recrystallization (CDRR); WROUGHT MAGNESIUM ALLOYS; AL-ZN ALLOY; MECHANICAL-PROPERTIES; DYNAMIC RECRYSTALLIZATION; TEXTURE EVOLUTION; ECAP;
D O I：
10.1007/s11595-011-0285-2
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Microstructure evolution of AZ31 Mg alloy during change-channel angular extrusion (CCAE) was investigated. The grains of AZ31 Mg alloy were refined significantly from 500 mu m to 15 mu m after CCAE deformed at 523 K. Dislocations were induced at the initial stage of extrusion and they rearranged themselves to form dislocation boundaries and sub-grain boundaries during deformation. When the specimen through the horizontal change channel with the strain increased, the sub-boundaries evolved to high angle grain boundaries (HAGB). The process of grain refinement can be described as continuous dynamic recovery and recrystallization (CDRR).
引用
收藏
页码：654 / 657
页数：4
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