在Gleeble- 15 0 0热模拟机上对Ti 6Al 2Zr 1Mo 1V钛合金铸态材料进行了恒温和恒应变速率下的热压缩变形实验 ,温度范围是 70 0～ 10 0 0℃ ,应变速率范围是 5× 10 -3 s-1～ 5 0s-1,测试了其真应力 -真应变曲线 ,观察了变形后的组织。结果表明 :合金在不同变形条件下其软化机制分别受动态回复和动态再结晶所控制 ,并且应变速率敏感指数随变形温度的升高而增大 The hot compressive deformation experiments of Ti 6Al 2Zr 1Mo 1V titanium alloy as-cast material at constant temperature and constant strain rate were carried out on a Gleeble-15 0 0 simulator at a temperature range of 70 0 ~ 100 ° C and a strain rate in the range of 5 × 10 -3 s-1 ~ 5 0s-1, the true stress-true strain curve was tested and the deformed tissue was observed. The results show that the softening mechanism of the alloy is controlled by dynamic recovery and dynamic recrystallization under different deformation conditions, and the strain rate sensitivity index increases with the increase of deformation temperature