| 热处理对Mg-4.0Zn-1.0Ca-0.6Zr组织和性能的影响 |
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| 引用本文： | 张雪飞,管仁国,周天国,崔彤. 热处理对Mg-4.0Zn-1.0Ca-0.6Zr组织和性能的影响[J]. 沈阳大学学报：自然科学版, 2013, 25(2): 119-122 |
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| 作者姓名： | 张雪飞 管仁国 周天国 崔彤 |
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| 作者单位： | 1. 沈阳大学机械工程学院,辽宁沈阳,110044
2. 东北大学材料与冶金学院,辽宁沈阳,110004 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 采用铸造-均化-轧制工艺制备了Mg-4.0Zn-1.0Ca-0.6Zr合金,研究了不同热处理工艺对合金微观组织和力学性能的影响.结果表明:合金板材硬度值与抗拉强度都是随时效时间的延长先上升后下降,在12h时达到最大值,分别为71.2HV和320MPa;延伸率时效8h时最大,达19.2%,随时效时间的延长,逐渐下降.合金板材时效后力学性能的提高是由于在晶粒内部析出了大量的Mg6Ca2Zn3和MgZn强化相所致.
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| 关 键 词： | 镁合金 时效 微观组织 力学性能 |
Effects of Heat Treatment on Microstructures and Mechanical Properties of Mg-4.0Zn-1.0Ca-0.6Zr Alloy |
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| Zhang Xuefei , Guan Renguo , Zhou Tianguo , Cui Tong. Effects of Heat Treatment on Microstructures and Mechanical Properties of Mg-4.0Zn-1.0Ca-0.6Zr Alloy[J]. Journal of Shenyang University, 2013, 25(2): 119-122 |
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| Authors: | Zhang Xuefei Guan Renguo Zhou Tianguo Cui Tong |
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| Affiliation: | 1. College of Mechanical Engineering, Shenyang University, Shenyang 110044, China; 2. School of Materials Metallurgy, Northeastern University, Shenyang 110004, China) |
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| Abstract: | Mg-4. 0Zn-1.0Ca-0. 6Zr alloys were prepared by the techchnology of casting-homogenizing- rolling, the effects of heat teatment on the microstructure and mechanical properties of those alloys were studied. The results show that, the hardness value and tensile strength firstly increased, and then decreased with the aging time extension. When aging 12 h, the hardness value and tensile strength reached peak values： 71.2 HV and 320 MPa. The peak elongation is 19. 2% when aging 8 h, and then the elongation gradually decreased with the aging time extension. The increasing of mechanical properties are because that there are a large of strengthening phase of Mg6Ca2Zn3 and MgZn in the grains. |
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| Keywords: | magnesium alloy aging microstructure mechanical properties |
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