Effect of Heat-treatment on Microstructure and Mechanical Properties of Cold Rolling TC4 Tube

TC4 titanium alloy tube was annealed at different temperature.The effects of annealing temperature on the microstructure and properties of TC4 titanium alloy tube were studied.The microstructure and mechanical properties of the tube were tested.The results show that there are obvious difference of the recrystallized structure of the tube after annealed at different temperature.The tube exhibits optimum mechanical properties when annealed at 920 ℃ for 1 h,furnace cooling to 500℃,and then air cooling to room temperature.