Enhancing room temperature mechanical properties of Mg–9Al–Zn alloy by multi-pass equal channel angular extrusion
Enhancing room temperature mechanical properties of Mg–9Al–Zn alloy by multi-pass equal channel angular extrusion
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DOI：
10.1016/j.jmatprotec.2009.12.013
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发表时间：
2010-03
影响因子：
6.3
通讯作者：
Jufu Jiang;Ying Wang;Z. Du;J. Qu;Yi Sun;Shou-jing Luo
中科院分区：
文献类型：
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作者：
Jufu Jiang;Ying Wang;Z. Du;J. Qu;Yi Sun;Shou-jing Luo
研究了等径角挤压对铸态Mg-9Al-Zn合金室温力学性能的影响。结果表明：等径角挤压可显著提高Mg-9Al-Zn合金的屈服强度、极限抗拉强度和伸长率等室温力学性能；加工路线、加工温度和挤压道次对等径角挤压Mg-9Al-Zn合金的室温力学性能有重要影响。当Mg-9Al-Zn合金在BCat 498K路线上进行6道次等径角挤压加工时，可获得屈服强度209MPa、极限抗拉强度339MPa、延伸率14.1%的最佳室温力学性能。可以制备出平均晶粒尺寸为4μm、具有较高力学性能的Mg-9Al-Zn合金大块材料。
Influence of equal channel angular extrusion on room temperature mechanical properties of cast Mg–9Al–Zn alloy was investigated. The results show that room temperature mechanical properties of Mg–9Al–Zn alloy, such as yield strength, ultimate tensile strength and elongation, can be improved heavily by equal channel angular extrusion. Processing routes, processing temperature and extrusion passes have important influence on room temperature mechanical properties of processed Mg–9Al–Zn alloy by equal channel angular extrusion. The optimum room temperature mechanical properties such as yield strength of 209MPa, ultimate tensile strength of 339MPa and elongation of 14.1%, can be obtained when Mg–9Al–Zn alloy was processed by equal channel angular extrusion for 6 passes at route BCat 498K. Large bulk materials of Mg–9Al–Zn alloy with average grain size of 4μm and high mechanical properties can be prepared.