Microstructure and Mechanical Properties of Magnesium Alloy AZ31 Processed by Compound Channel Extrusion

被引：11
|
作者：
Lei, Xiaofei [1 ,2 ]
Liu, Tianmo [1 ,2 ]
Chen, Jian [1 ,2 ]
Miao, Bin [1 ,2 ]
Zeng, Wen [1 ,2 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
[2] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China
来源：
MATERIALS TRANSACTIONS | 2011年 / 52卷 / 06期
关键词：
magnesium alloy AZ31; compound channel extrusion; microstructure and mechanical property; fracture behavior; SEVERE PLASTIC-DEFORMATION; MG ALLOY; ANGULAR EXTRUSION; BEHAVIOR; TEMPERATURE; TEXTURE;
D O I：
10.2320/matertrans.MC201004
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We report microstructure evolution and mechanical properties of Mg alloy AZ31 processed by a new severe plastic deformation technique which combines forward extrusion, equal channel angular extrusion (ECAE) and change channel angular extrusion (CCAE). Under all of the processing temperatures ranging from 623 K to 723 K, the grain size of the as-extruded sample was remarkably refined, which is attributed to the grain subdivision and dynamic recrystallization during the drastic deformation. We have also found the strength and tension-compression asymmetry were improved. Simultaneously, micro-fracture of tensile exhibited the characteristics of ductility, indicating plasticity of Mg alloy AZ31 was improved by compound channel extrusion. [doi:10.2320/matertrans.MC201004]
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页码：1082 / 1087
页数：6
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