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| The Mechanical Properties of Extruded AZ31B Magnesium Alloy Sheets |
| WU Zhangbin, GUI Liangjin, FAN Zijie |
| Department of Automotive Engineering, Tsinghua University, State Key Laboratory of Automotive Safety and Energy, Beijing 100084 |
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Cite this article:
WU Zhangbin GUI Liangjin FAN Zijie. The Mechanical Properties of Extruded AZ31B Magnesium Alloy Sheets. Chin J Mater Res, 2012, 26(2): 218-224.
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Abstract The mechanical properties of extruded AZ31B magnesium alloy sheets were investigated by conducting tension and compression experiments along with three different directions align in the sheet plane in this paper. The results show that extruded magnesium alloy sheets show high anisotropy and strong tension-compression asymmetry. The in-plane tensile yield stress in the extrusion direction (ED) is much bigger (about 2 times) than that of compression in the same direction and tension or compression in other directions. The tensile yield and ultimate strength in the 45o direction are smaller in some extent, while the elongation is the largest. The tension-compression asymmetry include the difference in tensile and compressive initial yield stresses (yield asymmetry) and plastic flow stresses (flow asymmetry), the compressive hardening curve turns to be unusual S-shape. The deformation mechanism which causes material anisotropy and tension-compression asymmetry was discussed based on the crystal plasticity.
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Received: 30 December 2011
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