Tension-compression asymmetry of the AZ91 magnesium alloy with multiheterogenous microstructure

被引：44
作者：
Sun, Jiapeng [1 ]
Yang, Zhenquan [1 ]
Liu, Huan [1 ]
Han, Jing [2 ]
Wu, Yuna [1 ]
Zhuo, Xiaoru [1 ]
Song, Dan [1 ]
Jiang, Jinghua [1 ]
Ma, Aibin [1 ]
Wu, Guosong [1 ]
机构：
[1] Hohai Univ, Coll Mech & Mat, Nanjing 210098, Jiangsu, Peoples R China
[2] China Univ Min & Technol, Sch Mech & Elect Engn, Xuzhou 221116, Jiangsu, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2019年 / 759卷
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Tensile-compression asymmetry; Heterogenous microstructure; AZ91; alloy; Equal channel angular pressing; YIELD ASYMMETRY; HIGH-STRENGTH; BIMODAL MICROSTRUCTURE; TEXTURE EVOLUTION; MG; DUCTILITY; TEMPERATURE; DEPENDENCE; ANISOTROPY; MECHANISM;
D O I：
10.1016/j.msea.2019.05.093
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The tension-compression asymmetric mechanical behavior of the AZ91 magnesium alloy with multi-heterogenous microstructure was investigated in comparison with its cast counterpart. The individual effect of different deformation modes in fine and coarse grains are clarified to reveal the underlying mechanism behind the asymmetric yield behavior by electron back-scatter diffraction analysis. The result demonstrated that the mechanical twinning prevailing in coarse grains is responsible for the yield asymmetry of the multi-heterogeneous alloy.
引用
收藏
页码：703 / 707
页数：5
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