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在Gleeble-3800热模拟试验机上,利用热压缩试验研究了TP310HCbN合金在变形温度1050 ~1250℃、应变速率0.1~20s-1条件下的热变形特性,并建立热变形本构方程,得到其热激活能为467.412 kJ/mol;在本实验条件下,随着应变速率的提高,再结晶晶粒尺寸先减小后增大,以应变速率5 s-1为分界点;采用分段函数推导出TP310HCbN动态再结晶晶粒尺寸模型,在适用区间内均具有较好的拟合度.

参考文献

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