燕山大学学报2016，Vol.40Issue(2)：123-129,7.
AZ31镁合金轧制板材各向异性行为的晶体塑性研究
Study on anisotropic mechanical behavior of AZ31 Mg alloy sheet based on crystal plasticity modeling
摘要
Abstract
The deformation mechanism of Mg alloy at room temperature is described by the competition of dislocation slip and twin⁃ning.In order to analysis this deformation mechanism at meso⁃scale, combined effects with dislocation slip and twinning should be taken into account in crystal plasticity modeling. Therefore, based on crystal plasticity model combined with slip and twinning effects, a polycrystalline model was built based on Representative Volume Element ( RVE) method and simple tension along rolling direction ( RD) and transverse direction ( TD) of AZ31 rolling sheet was discussed.It is found that basal slip, prismatic and pyrami⁃dal slips are the main deformation mechanism along RD direction, while prismatic and pyramidal slips along TD direction.Different contribution of basal slip to the deformation leads to the strong anisotropic behavior, lower yield strength along RD than that along TD direction.关键词
AZ31变形镁合金/晶体塑性本构/滑移/孪生/各向异性/基面滑移Key words
AZ31 wrought Mg alloys/crystal plasticity constitutive model/dislocation slip/twinning/anisotropy/basal slip分类
矿业与冶金引用本文复制引用
杨冲,彭艳,杨硕,韩宇,石宝东..AZ31镁合金轧制板材各向异性行为的晶体塑性研究[J].燕山大学学报,2016,40(2):123-129,7.基金项目
国家自然科学基金资助项目（51401178）；河北省自然科学基金资助项目（E2015203009）；人力资源和社会保障部留学归国人员择优资助项目（ CG2014003004）；河北省高等学校科技研究项目 （）
