Progress in Powder Metallurgy TiAl-Based Intermetallics
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
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.
2019, 
