Thermal simulation tests were conducted at different deformation temperatures and degrees by a Gleeble simulator.The results show that the alloy has higher resistance to deformation;with an increase of the deformation temperature,the alloy's flow stress and maximum value decrease;with an increase of the deformation degree,both the initial recrystallization temperature and the complete recrystallization temperature decrease sharply.When the deformation degree reaches 30%,60% and 80%,the initial recrystallization temperature is around 950℃,850℃ and 800℃,the complete recrystallization temperature is around 1 100℃,1 050℃ and 1 000℃ respectively.When the deformation temperature is higher than 1100℃,the deformation degree increases and the re-crystalized grains are significantly refined.The forging process parameters were established according to the regular pattern mentioned above.The microstructure of the bar forged in this pattern is uniform and the result is satisfying.
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