研究了Ｔｉ－２４Ａｌ－１４Ｎｂ－３Ｖ－０．５Ｍｏ合金压缩时的超塑变形行为和变形过程中的组织变化。结果表明：所研究合金在ｔ＝９８０℃、ε＝７．２×１０－３ｓ－１的条件下ｍ值为０．３４，压缩时的真应变可大于１．６。在合金的超塑变形初期，Ｏ相发生动态再结晶和等轴化过程。随着变形过程的进行，新形成的Ｏ相晶粒在Ｂ２相中滑动和转动，Ｂ２相中的位错运动和界面扩散起调节作用 The deformation behavior and deformation of Ti-24Al-14Nb-3V-0.5Mo alloy during compression were investigated. The results show that the m value of the alloy under study is 0.34 at t = 980 ℃ and ε = 7.2 × 10-3s-1, and the true strain at compression can be greater than 1.6. During the initial stage of superplastic deformation of alloy, the phase O undergoes dynamic recrystallization and equiaxisation. With the deformation process, the newly formed O-phase grains slide and rotate in the B2 phase, and the dislocation movement and interface diffusion in the B2 phase play a regulatory role