Superplasticity of a Ti-24A1-14Nb-3V-0.5Mo intermetallic alloy

Superplastic properties and microstructural evolution of a Ti-24Al-14Nb-3V- 0.5Mo (at. pct) intermetallic alloy were studied. Optimum superplastic prop erties were obtained for temperatures in the interval 960 degreesC less tha n or equal to T less than or equal to 980 degreesC. The apparent activation energy in the superplastic regime was determined and the deformation mecha nism was also discussed. Based on the studies, a curve panel with three she ets sandwich structure was fabricated successfully. The microstructures cor responding to different strain in the part were also studied.