Wrought processing of γ-TiAl alloys

来源期刊：中国有色金属学报(英文版)2002年第4期

论文作者：M.Oehring F.Appel U.Lorenz

文章页码：569 - 576

Key words：titanium aluminides；hot working；dynamic recrystallization；grain refinement; microstructure

Abstract: The hot working behaviour of intermetallic titanium aluminide alloys was described. The microstructural evolution during hot working was systematically studied on a series of binary and technical alloys with aluminium contents ranging between 45% and 54%(mole fraction). Process regimes in terms of temperature and strain rate were identified which allow large strain hot working to be carried out, either by forging or extrusion, with the production of sound forgings. The major areas addressed in the paper are ingot structure and homogenization, factors determining hot working and recrystallization, ingot conversion , and secondary processing.