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.
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)
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）
