材料科学
极限抗拉强度
镁
打滑(空气动力学)
变形(气象学)
镁合金
晶体孪晶
变形机理
声发射
加工硬化
复合材料
拉伸试验
电子背散射衍射
硬化(计算)
热的
合金
数字图像相关
冶金
微观结构
物理
图层(电子)
热力学
作者
Shu-bang Wang,Zhifeng Yan,Hongxia Zhang,Xiuli He,Peng Dong,Wenxian Wang,Zhuoran Wang
标识
DOI:10.1016/j.jmrt.2022.07.169
摘要
Based on the complexity of material damage and fracture behavior, the tensile deformation process of AZ31B magnesium alloy is characterized by infrared thermography (IR) and acoustic emission (AE) these two non-destructive technologies, and using in-situ EBSD technology to explore microstructure evolution under different tensile strains simultaneously. The results show that in the process of tensile deformation, the degree of strain hardening increases continuously with the deformation, and the deformation mechanism of the material changes from basal slip to pyramidal slip and {10–12} tensile twinning. The tensile deformation stage presents different signal characteristics. Using fracture mechanics and the energy release law of materials, combined with temperature and AE signal fluctuations, the transformation of the deformation mechanism, the degree of work hardening, and the dangerous zone during the entire tensile process can be effectively captured.
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