Abstract
Experimental results on superplasticity in a titanium aluminide, Ti 3 Al, have been reported. Elongations of over 500% can be obtained in this intermetallic alloy. Preliminary results on microstructural evolution of the Ti 3 Al alloy show that dynamic grain grown occurs and the volume fraction of α 2 phase decrease during superplastic deformation. The superplastic properties of Ti 3 Al are compared with those of another aluminide, Ni 3 Al, in terms of the effects of testing temperature and strain rate. Possible mechanisms of superplastic deformation of these intermeticallic alloys are also proposed
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