粉末冶金Ti-Al系金属间化合物的研究

摘要

Because of capability of preparation for Ti-Al based intermetallics with fine -and uniformity micro-structures, powder metallurgy processing method has an unique application in preparing Ti-Al based intermetallics. Using the examples of Ti-23Al-17Nb (at%) and Ti-45Al-2Cr-2Nb-( B, W)(at%) alloy, the paper introduces the fabrication, shaping and properties of Ti-Al based intermetallic prepared by powder metallurgy processing, and shows a good prospect of applications in the aerospace areas.%由于可以制备出组织细小、均匀的Ti-Al系金属间化合物材料,粉末冶金技术在Ti-Al系金属间化合物材料的应用研究方面具有很强的优势.本文以Ti-23Al- 17Nb( at％)和Ti-45 Al-2Cr-2Nb-(B,W)(at％)为例,介绍了粉末冶金技术在Ti-Al系金属间化合物材料制备及成形方面的制备工艺、性能和部分样件,展示了Ti-Al系金属间化合物材料在航天及武器型号方面良好的应用前景.