TiAl金属间化合物粉末冶金工艺研究进展  

Progress in Powder Metallurgy TiAl-Based Intermetallics

作　　者：张国庆 刘玉峰 刘娜 李周 ZHANG Guoqing;LIU Yufeng;LIU Na;LI Zhou(Science and Technology of Advanced High Temperature Structural Materials Laboratory,AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China)

机构地区：[1]中国航发北京航空材料研究院先进高温结构材料重点实验室

出　　处：《航空制造技术》2019年第22期38-42,共5页Aeronautical Manufacturing Technology

基　　金：国家自然科学基金重点资助项目（51434007）

摘　　要：粉末冶金工艺可有效避免铸锭冶金带来的成分偏析、组织粗大、缩松缩孔等问题,是TiAl金属间化合物制备的重要研究方向。从粉末制备、烧结、成形、热处理4个方面对TiAl金属间化合物粉末冶金工艺的研究进展进行了介绍,重点评述了冷壁坩埚真空气雾化、电极感应熔炼气雾化、热等静压等制备技术,对粉末冶金制备TiAl金属间化合物的研究方向进行了展望。Powder metallurgy(PM) TiAl-based alloy can solve the problems associated with ingot metallurgy, such as composition segregation, coarse microstructure and shrinkage cavity. In this paper, recent progress of PM TiAl-based in termetallics in powders preparation, sintering, forming and heat treatment was reviewed. Some methods were introduced including cold crucible vacuum induction melting gas atomization(VIGA-CC), electrode induction melting gas atomization(EIGA), hot isostatic pressing(HIP). Furthermore, the research direction of PM TiAl-based intermetallics was pointed out.

关 键 词：TIAL金属间化合物 粉末冶金 气雾化 热等静压(HIP) 近净成形 

分 类 号：TG1[金属学及工艺—金属学]