| 5wt％YAl2p／Mg-Li复合材料的组织与性能的研究 |
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| 引用本文： | 王素洁,吴国清,李瑞华,罗根香,黄正.5wt％YAl2p／Mg-Li复合材料的组织与性能的研究[J].航空材料学报,2007,27(1):20-22. |
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| 作者姓名： | 王素洁 吴国清 李瑞华 罗根香 黄正 |
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| 作者单位： | 北京航空航天大学,材料科学与工程学院,北京,100083 |
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| 摘 要： | 采用搅拌铸造法制备了5wt% YAl2p颗粒增强Mg-14Li-1Al合金基复合材料,研究了YAl2p/Mg-14Li-1Al复合材料的界面、组织特征,并对基体合金和复合材料的室温力学性能进行了测试.组织分析表明,YAl2p增强颗粒在基体合金中分布均匀,界面结合良好,未发现明显的团聚现象,也未观察到化学反应或明显的原子扩散.复合材料的室温拉伸强度为189 Mpa,较基体合金提高了约45.3%,而塑性得到了良好的保持(7%).
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| 关 键 词： | 镁锂合金 复合材料 钇铝金属间化合物 搅拌铸造 |
| 文章编号： | 1005-5053(2007)01-0020-03 |
| 修稿时间： | 2005年9月22日 |
Microstructures and Mechanical Properties of 5wt% YAl2p/Mg-14Li-1Al Composite Material |
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| WANG Su-jie,WU Guo-qing,LI Rui-hua,LUO Gen-xiang,HUANG Zheng.Microstructures and Mechanical Properties of 5wt% YAl2p/Mg-14Li-1Al Composite Material[J].Journal of Aeronautical Materials,2007,27(1):20-22. |
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| Authors: | WANG Su-jie WU Guo-qing LI Rui-hua LUO Gen-xiang HUANG Zheng |
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| Abstract: | A new YAl_2p/Mg-14Li-1Al composites with 5wt%YAl_2p was prepared by stir-casting and its microstructures and properties are investigated systematically.The results show that,the YAl_2p particles distribute homogeneously in Mg-14Li-1Al matrix,and a good YAl_2p/Mg-14Li-1Al interface was developed.There are no reaction products or obvious elements diffusing on the interface.The tensile strength of the reinforced material is 189MPa,shown to be considerably improved approximately 45.3% compared with matrix alloy,and the composite keeps good ductility property with an elongation of 7%. |
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| Keywords: | Mg-Li alloy composite Y-Al intermetallic compound stir-casting |
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