By forging 70％deformation of the Ti1023 titanium alloy in the two-phase region and heating at 785-885 ℃ for 30-300 min,the recovery and recrystallization law of the deformed microstructure under different heating temperatures and holding time were observed and analyzed.The results show that after the deformation of the Ti1023 titanium alloy in the two-phase region,the deformed microstructure is dominated by recovery when the heating temperature below 800 ℃,supplemented by recrystallization,the microstructure retains the deformed morphology,and the recrystallized grains don't grow.When heated at 800-885 ℃,the deformed microstructure is dominated by recrystallization,supplemented by recovery.When the heating temperature is constant and the holding time is prolonged,the recrystallized grains grow.When the holding time is constant,the higher the heating temperature,the shorter the time required to complete recrystallization,and the more obvious the trend of grain growth.The recrystallized grain growth is not conducive to the refinement of the deformed microstructure.
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