The Evolution of Al-Li Base Products for Aerospace and Space Applications
The Evolution of Al-Li Base Products for Aerospace and Space Applications
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DOI：
10.1007/s11661-012-1155-z
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发表时间：
2012-09-01
影响因子：
2.8
通讯作者：
Liu, John
中科院分区：
文献类型：
--
作者：
Rioja, Roberto J.;Liu, John
对过去50年来影响铝锂基合金性能的物理、机械和冶金变量进行了技术回顾。首先，讨论了不同合金的历史演变。然后，负责不同的机械性能的显微组织特征进行了识别和讨论。合金添加剂的作用进行了讨论。介绍了第二代铝锂合金的缺点，讨论了克服这些缺点的关键合金设计原则。最后，性能参数，发挥了重要作用，在几个飞机和航天器组件的尺寸按时间顺序进行审查，并与第三代铝锂合金。得出的结论是，已作出重大改进，以定位铝锂合金，使下一代航空航天器的性能得到改善。
A technical review of the physical, mechanical, and metallurgical variables that have influenced performance of Al-Li based alloys over the last 50 years is presented. First, the historic evolution of different alloys is discussed. Then, the microstructural features responsible for different mechanical properties are identified and discussed. The role of alloying additions is discussed. The shortcomings of a 2nd generation Al-Li alloys are introduced and the key alloy design principles used to overcome these are discussed. Finally, the performance parameters that play a major role in sizing several aircraft and space craft components are reviewed in a chronological perspective and compared with 3rd-generation Al-Li alloys. It is concluded that significant improvements have been made to position Al-Li alloys to enable improved performance of next generation of air and space craft.