| Microstructure and mechanical properties of Mg-6A1-4RE-0.4Mn alloy |
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| 作者姓名： | 王建利 彭秋明 吴耀明 王立民 |
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| 作者单位： | [1]Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China [2]Graduate School, Chinese Academy of Sciences, Beijing 100049, China |
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| 基金项目： | Foundation item： Project supported by Chinese Academy of Science for Distinguished Talents Program; Project（KGCX2-SW-216） supported by the Science Program of the Promotes Northeast of CAS; Project（05GG54） supported by Science Technology Program of Changchnn, China |
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| 摘 要： | Mg-6Al--4RE-0.4Mn （mass fraction, %, RE=Ce rich mischmetal） alloy was prepared by steel mould casting technique. Solid solution and artificial aging （T6） were carried out. The microstructure and mechanical properties of both as-cast and T6 treated alloys were investigated at room temperature and 423 K. It is found that the intermetallic compounds of the as-cast and T6 treated alloys were mainly composed of Al11RE3, Mg17Al12 and Al6REMn6. The Vickers hardness （Hv） of the as-cast alloy is 63 and it increases to 70 after T6 heat treatment. T6 heat treatment plays a slight role in the tensile properties at room temperature, but the yield strength and elongation of T6 state at 423 K are distinctly improved. The yield strength and elongation of the as-cast alloy at 423 K are 71 MPa and 18%, respectively, and the values increase after T6 heat treatment, which is attributed to Al11RE3, Mg17Al12 and Al6REMn6 precipitates that impede the dislocation movement and gliding of grain boundaries effectively.
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| 关 键 词： | 镁合金 微观结构 机械性能 金属铸造 金属加工 强度 |
| 收稿时间： | 2006-07-28 |
| 修稿时间： | 2006-09-15 |
Microstructure and mechanical properties of Mg-6A1-4RE-0.4Mn alloy |
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| WANG Jian-li, PENG Qiu-ming, WU Yao-ming, WANG Li-min.Microstructure and mechanical properties of Mg-6A1-4RE-0.4Mn alloy[J].Transactions of Nonferrous Metals Society of China,2006,16(A03):1703-1707. |
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| Authors: | WANG Jian-li PENG Qiu-ming WU Yao-ming WANG Li-min |
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| Abstract: | |
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| Keywords: | Mg-Al-RE alloy casting heat treatment microstructure mechanical property |
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