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摘要：
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通过Gleeble-3500热模拟实验机得出TC6钛合金在变形温度为860~950℃,应变速率为0.01~50 s-1,变形程度分别为30%和50%时的应力-应变曲线。通过金相实验研究了TC6在实验条件下微观组织的演变规律,并建立了TC6在(α+β)两相区塑性变形过程中α相的动态再结晶模型。结果表明:TC6钛合金在低应变速率下变形时,动态回复过程相对增强,动态再结晶受到抑制;相同温度、不同应变速率下的微观组织形貌基本相同,但是随着应变速率的增加再结晶程度增大,组织细化。模型平均误差小于13%,可以满足预测需要。
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The stress-strain curves for TC6 titanium alloy at the deformation temperature of 860-950℃,strain rate of 0.01-50s-1,the deformation degree of 30% and 50% were obtained through Gleeble-3500 thermal simulation testing machine.The discipline of TC6 microstructure evolution in the experimental conditions was researched through and the dynamic recrystallization model of α-phase plastic during the(α + β) field deformation process was established.The results show that at low strain rate deformation,the dynamic recovery process of TC6 titanium alloy is relatively enhanced and dynamic recrystallization is inhibited;at the same temperature and different strain rate,the microstructure pattern is basically identical congruent,however,with the increasing of the strain rate,the degree of recrystallization increases and the microstructure refines.The average error value is smalller than 13% by comparing the calculated values and measured values.
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作者简介：
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参考文献：
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