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

页码：654 / 657

页数：4

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