航空学报 > 1998, Vol. 19 Issue (2): 129-136

稀土元素及杂质在铝锂合金中的作用研究现状与发展

孟亮1, 郑修麟2   

  1. 1. 浙江大学材料科学与工程系;2. 西北工业大学材料科学与工程学院
  • 收稿日期:1997-08-11 修回日期:1997-11-28 出版日期:1998-04-25 发布日期:1998-04-25

STATUS AND DEVELOPMENT ON EFFECTS OF IMPURITIES AND RARE EARTH ELEMENTS IN Al Li ALLOYS

Meng Liang1, Zheng Xiulin2   

  1. 1. Department of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027;2. College of Materials Science and Engineering, Northwestern Polytechnical University, Xi′an, 710072
  • Received:1997-08-11 Revised:1997-11-28 Online:1998-04-25 Published:1998-04-25

摘要:

综述了稀土元素和杂质对铝锂合金微观组织及力学性能的作用,概括了杂质致脆及稀土微合金化的规律与机制,根据已有研究结果,对目前铝锂合金的发展与应用中需要引起重视的问题,提出了某些观点与建议。

关键词: 铝锂合金, 杂质, 稀土元素, 力学性能, 微观组织

Abstract:

The study status for the effects of impurities and rare earth elements in Al Li alloys has been surveyed. Particular attention has been paid to the mechanical properties in respect of different conditions and the mechanisms responsible for impurity induced embrittlement and rare earth microalloying. According to the presented investigations, some suggestions and viewpoints have been proposed to solve the noteworthy problem in the development and application of Al Li alloys.

Key words: Al Li alloy, impurities, rare earth addition, mechanical properties, microstructures

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