Deformation mechanisms of Mg-3Al-1Zn alloy by polycrystal plasticity modeling

被引：1

作者：

Yin, De-liang ^{[1
]}

Liu, Jin-qiang ^{[1
]}

Wu, Bing ^{[1
]}

机构：

[1] Nanjing Univ Sci & Technol, Sch Mat Sci & Engn, Nanjing 210094, Jiangsu, Peoples R China

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2015年 / 25卷 / 07期

基金：

中国国家自然科学基金;

关键词：

Mg alloy; deformation mechanism; polycrystal plasticity model; texture; NONBASAL SLIP SYSTEMS; MAGNESIUM ALLOY; HARDENING EVOLUTION; NEUTRON-DIFFRACTION; TEXTURE EVOLUTION; ROOM-TEMPERATURE; STRAIN; MG; SIMULATION;

D O I：

10.1016/S1003-6326(15)63831-6

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A polycrystal plasticity model was developed to analyze the room-temperature deformation behaviors of Mg-3Al-1Zn alloy (AZ31). The uniaxial tension and compression tests at room temperature were conducted using cast and extruded AZ31 rods with different textures and combined with the proposed model to reveal the deformation mechanisms. It is shown that, different flow curves of two specimens under tension and compression tests can be simulated by this model. The flow curves of AZ31 extrusions exhibit different shapes for tension and compression due to different activities of tensile twinning and pyramidal < c+a > slip. The metallographic and TEM observations showed the equal twinning activities at the initial stage in tension and compression tests and the occurrence of pyramidal < c+a > slip in compression of as-cast Mg-3Al-1Zn alloy with increasing the strain, which is consistent with the simulated results by the proposed model.

引用

页码：2188 / 2194

页数：7

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