Microstructure evolution of AZ31 Mg alloy during equal channel angular extrusion

被引：89

作者：

Jin, Li

Lin, Dongliang ^{[1
]}

Mao, Dali

Zeng, Xiaoqing

Chen, Bin

机构：

[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200030, Peoples R China

[2] Shanghai Jiao Tong Univ, Open Lab Educ, Minist High Temp Mat & Tests, Shanghai 200030, Peoples R China

[3] Shanghai Jiao Tong Univ, Natl Engn Res Ctr Light Alloys Net Forming, Shanghai 200030, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2006年 / 423卷 / 1-2期

关键词：

AZ31 Mg alloy; grain refinement; equal channel angular extrusion (ECAE); continuous dynamic recovery and recrystallization (CDRR);

D O I：

10.1016/j.msea.2006.02.045

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Microstructure evolution of AZ31 Mg alloy during equal-channel angular extrusion (ECAE) was investigated. The grains of AZ31 Mg alloy were refined significantly after extruded one to eight passes at 498 K. Dislocations were induced at the initial stage of extrusion and they rearranged themselves to form dislocation boundaries and sub-grain boundaries during deformation. As strain increased, the newly created dislocations in sub-grains were absorbed by the sub-boundaries and the misorientation between sub-boundaries increased and evolved to low angle grain boundaries (LAGBs) and high angle grain boundaries (HAGBs). The process of grain refinement can be described as continuous dynamic recovery and recrystallization (CDRR). (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：247 / 252

页数：6

共 16 条

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