对Inconel625合金在1000-1200℃,应变速率为10-80s-1条件下的热模拟压缩实验结果进行分析,修正了实验中由于高速变形产生的热效应引起的真应力-真应变曲线上流动应力的误差,通过回归分析建立了Inconel625合金高温高速下的本构模型.变形后的微观组织分析结果表明,提高变形速率是细化最终晶粒尺寸的重要途径,但过高的变形速率容易产生残余孪晶.在适当的温度(1050℃)与应变速率(50s-1)下,合金具有均匀而细小的理想组织.
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