晶体孪晶
镁合金
材料科学
打滑(空气动力学)
镁
电子背散射衍射
变形(气象学)
透射电子显微镜
冶金
合金
位错
变形机理
衍射
结晶学
复合材料
光学
化学
微观结构
纳米技术
物理
热力学
作者
Dewen Hou,Yuzhi Zhu,Qizhen Li,Tianmo Liu,Haiming Wen
标识
DOI:10.1016/j.msea.2019.01.021
摘要
Abstract Twinning process and dislocation characteristics were determined by means of quasi in-situ electron backscatter diffraction and high-resolution transmission electron microscopy techniques in a rolled AZ31 magnesium alloy under different strain paths (compression along rolling direction and tension along normal direction). It is demonstrated that the activation of different twin variants depends on the strain path, and thus these twin variants can further induce different texture characteristics. In addition, two independent slip systems were activated during deformation of both strain paths. However, the dislocation slip modes of the two kinds of deformation are different, resulting in different stress-strain response.
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