论文摘要
Magnesium（Mg） alloys with hexagonal close-packed（HCP） structure usually have a poor ductility at room temperature. The addition of yttrium（Y） can improve the ductility of Mg alloys. To understand the underlying mechanism, crystal plasticity finite element method（CPFEM） was employed to simulate the tensile deformation of a Mg-0.8 wt% Y alloy. The simulated stress–strain curve and the grain-scale slip activities were compared with an in-situ tensile test conducted in a scanning electron microscope.According to the CPFEM result, basal slip is the dominant deformation mode in the plastic deformation stage, accounting for about 50% of total strain. Prismatic slip and pyramidal a slip are responsible for about 25% and 20% of the total strain, respectively. Pyramidal c + a slip and twinning, on the other hand,accommodate much less strain.
论文目录
文章来源
类型: 期刊论文
作者: Wenxue Li,Leyun Wang,Bijin Zhou,Chuanlai Liu,Xiaoqin Zeng
来源: Journal of Materials Science & Technology 2019年10期
年度: 2019
分类: 工程科技Ⅰ辑
专业: 金属学及金属工艺
单位: National Engineering Research Center of Light Alloy Net Forming, School of Materials Science and Engineering, Shanghai Jiao Tong University,The State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University
基金: financially supported by the National Natural Science Foundation of China (Nos. 51631006,51671127 and 51825101)
分类号: TG146.22
页码: 2200-2206
总页数: 7
文件大小: 784K
下载量: 10
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