| 热处理对Mg-5Zn-0.63Er合金显微组织及力学性能的影响 |
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| 引用本文： | 赵险峰,李淑波,王庆峰,杜文博,刘轲.热处理对Mg-5Zn-0.63Er合金显微组织及力学性能的影响[J].中国有色金属学会会刊,2013,23(1):59-65. |
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| 作者姓名： | 赵险峰 李淑波 王庆峰 杜文博 刘轲 |
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| 作者单位： | 北京工业大学材料科学与工程学院,北京,100124 |
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| 基金项目： | Project(2007CB613706) supported by the National Basic Research Program of China;Projects(151071004,51101002) supported by the National Natural Science Foundation of China |
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| 摘 要： | 通过不同的热处理工艺研究含有准晶Ⅰ相的铸态Mg-5Zn-0.63Er(质量分数,％)合金的显微组织演变.结果表明:合金在480℃固溶10 h后,除有W相颗粒析出外,准晶Ⅰ相几乎全部固溶在基体中.固溶态Mg-5Zn-0.63Er合金在175℃下时效6～10h.合金在峰时效态的抗拉强度约为261MPa、伸长率为10.5％.合金拉伸强度的提高归因于杆状MgZn2相的析出.
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| 关 键 词： | Mg-5Zn-0.63Er合金 稀土 铒 热处理 显微组织 力学性能 |
| 收稿时间： | 27 October 2011 |
Effects of heat treatment on microstructure and mechanical properties of Mg-5Zn-0.63Er alloy |
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| Xian-feng ZHAO
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Shu-bo LI
,
Qing-feng WANG
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Wen-bo DU
,
Ke LIU.Effects of heat treatment on microstructure and mechanical properties of Mg-5Zn-0.63Er alloy[J].Transactions of Nonferrous Metals Society of China,2013,23(1):59-65. |
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| Authors: | Xian-feng ZHAO Shu-bo LI Qing-feng WANG Wen-bo DU Ke LIU |
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| Affiliation: | College of Materials Science and Engineering,Beijing University of Technology,Beijing 100124,China |
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| Abstract: | The microstructure evolution of the Mg–5Zn–0.63Er (mass fraction, %) alloy containing quasicrystalline phase (I-phase) under the as-cast condition was investigated via different heat treatments. The results show that apart from the precipitation of the W-phase particles, the I-phase almost dissolves into the matrix after solid solution treatment at 480 °C for 10 h (T4 state). The solution-treated alloy was aged at 175 °C for 6–100 h (T6 state). The ultimate tensile strength of the peak-aged alloy is approximately 261 MPa companying with an elongation of 10.5%. The improvement of the tensile strength is mainly attributed to the presence of the rod-like MgZn2 particles. |
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| Keywords: | Mg-5Zn-0 63Er alloy rare earth Er heat treatment microstructure mechanical properties |
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