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薛勇,郑杰,闫钊鸣,徐健,张治民,李旭斌,杨勇彪,王强.差速循环扩挤制备的AZ31镁合金的组织和力学性能[J].稀有金属材料与工程(英文),2021,50(5):1583~1589.[Xue Yong,Zheng Jie,Yan Zhaoming,Xu Jian,Zhang Zhimin,Li Xubin,Yang Yongbiao and Wang Qiang.Microstructure and Mechanical Properties of AZ31 Magnesium Alloy Prepared by Cyclic Expansion-Extrusion with Asymmetrical Extrusion Cavity[J].Rare Metal Materials and Engineering,2021,50(5):1583~1589.]
Microstructure and Mechanical Properties of AZ31 Magnesium Alloy Prepared by Cyclic Expansion-Extrusion with Asymmetrical Extrusion Cavity
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Received:May 11, 2020  
DOI:
Key words: magnesium alloy  cyclic expansion-extrusion  microstructure  mechanical property
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Author NameAffiliation
Xue Yong,Zheng Jie,Yan Zhaoming,Xu Jian,Zhang Zhimin,Li Xubin,Yang Yongbiao and Wang Qiang  
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Abstract:
      Cyclic expansion-extrusion with an asymmetrical extrusion cavity (CEE-AEC) was performed on AZ31 magnesium alloy, and the effects of deformation passes on grain refinement, texture evolution, and mechanical properties were studied. The results show that during the CEE-AEC process, the continuous dynamic recrystallization (CDRX) and discontinuous dynamic recrystallization (DDRX) occur, and the average grain size reduces from 344 μm to 11.7 μm. The (0001) basal texture intensity gradually increases with the increase of processing passes. The existence of asymmetric cavities in CEE-AEC dies causes a great deflection of the basal texture. In addition, the mechanical properties of the alloy improve, and the tensile yield strength (TYS), ultimate tensile strength (UTS), and elongation (EL) are 109 MPa, 211 MPa, and 30.8%, respectively.