Plastic anisotropy and fracture behavior of AZ31 magnesium alloy

作     者：刘培 信运昌 刘庆 LIU Pei;XIN Yun-chang;LIU Qing

作者机构：重庆大学材料科学与工程学院重庆400044 重庆大学国家镁合金工程技术研究中心重庆400044 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2011年第21卷第4期

页      面：880-884页

核心收录：

学科分类：0806[工学-冶金工程] 08[工学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0813[工学-建筑学] 0703[理学-化学] 0814[工学-土木工程] 0702[理学-物理学] 

基　　金：Project(2007CB613703)supported by the National Basic Research Program of China Project(CDJXS11132227)supported by the Fundamental Research Funds for the Central Universities,China 

主　　题：AZ31 magnesium alloy anisotropy deformation mechanism fracture 

摘      要：The effects of texture and abnormal large grains on the plastic anisotropy and fracture behavior of hot-rolled AZ31 magnesium alloy were investigated. Uniaxial tensile deformation behaviors of samples with tensile axis tilting 0°, 15°, 30°, 45°, 60°, 75° and 90° to normal direction （ND） respectively were addressed. Tensile deformation anisotropy was observed for samples with different angles to ND. The results show that the specimens with the angle from 0° to 30° exhibit relatively lower yielding strength due to the {1 012}extension twinning. However, basal slip and prismatic slip are the dominant deformation modes for the specimens with angles larger than 45°. Macro-fractures are parallel to the length direction of abnormal large grains in the specimens with angles less than 60°, while those are serrated fracture edge for specimens with angles 75° and 90°.