Crystal plasticity modelling of shear band deformation and its effect on the formability of Mg-3Al-1Zn sheets

被引：0
作者：
Chen, Shuai-Feng [1 ,2 ]
Song, Hong-Wu [1 ]
Zhang, Shi-Hong [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
36TH IDDRG CONFERENCE - MATERIALS MODELLING AND TESTING FOR SHEET METAL FORMING | 2017年 / 896卷
关键词：
Magnesium alloy; Crystal plasticity; Shear bands; RVE; Anisotropy; Formability; AZ31 MG ALLOY; GRAIN-SIZE; TEXTURE; RECRYSTALLIZATION; MICROSTRUCTURE; COMPRESSION; ORIENTATION; DEPENDENCE;
D O I：
10.1088/1742-6596/896/1/012018
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Shear bands is a kind of typical microstructure in magnesium alloy which has drawn much attention during recent years. The formation of shear bands during the isothermal differential speed rolling of Mg-3Al-1Zn sheets is analysed by experimental methods. In addition, results of Erichsen and tensile tests indicate that the shear bands have an obvious effect on the anisotropic fracture behaviour and formability of magnesium alloy. A represent volume element (RVE) method combined with crystal plasticity model is established to investigate the effect of shear bands on the anisotropic fracture behaviours systematically by considering the grain size, texture, width, and tilted angle. The simulation results disclose the above factors can induce discontinuous strain and stress between the shear band regions (SBRs) and non-shear band regions (NSBRs), but the grain size and tilted angle have much bigger effect than that of texture and width, leading to the fracture at the interface SBR and NSBR.
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页数：7
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