| Abstract: | A TiAl based material with a composition of Ti33Al3Cr0.5Mo(mass fraction, %) was hot forged to produce finegrained microstructure with good homogeneity. Samples of the hotforged material were tested at strain rates ranging from 810-5s-1 to 810-4s-1 and temperatures between 1 G-*6]000 and 1 075 to investigate its superplastic behavior. Results showed the occurrence of strain hardening and high m values which led to the good superplasticity of this alloy. Optimum superplastic forming conditions were at 1 075 and a strain rate of 810-5s-1. Under these conditions, the maximum elongation to fracture of 517% was achieved. |
