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宇航材料工艺 , 2012, 42(1): 13-19. doi: 10.3969/j.issn.1007-2330.2012.01.003

铝锂合金及其在航天工业上的应用

李劲风 1, , 郑子樵 2, , 陈永来 3, , 张绪虎 4,

1.中南大学材料科学与工程学院,长沙410083;教育部有色金属材料科学与工程重点实验室,长沙410083

2.中南大学材料科学与工程学院,长沙410083

3.航天材料及工艺研究所,北京100076

4.航天材料及工艺研究所,北京100076

关键词： 铝锂合金 , 微合金元素 , 合金化作用 , 航天应用

Al-Li Alloys and Their Application in Aerospace Industry

综述了铝锂合金发展的三个阶段及三个阶段铝锂合金的性能特点.重点阐述了Cu、Li等主合金元素以及Mg、Ag、Zn、Mn、Sc、Zr、In和稀土Ce等微合金化元素在第三代铝锂合金中的合金化作用；这些微合金化元素可改变合金中原有析出相的尺寸、形状、分布,或促使新的强化相析出,也可以细化晶粒、控制再结晶.总结了铝锂合金在航天工业中的应用实践及在将来的应用计划.

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