GH1016合金的动态再结晶行为

Dynamic recrystallization behavior of GH1016 alloy

利用GLEEBLE-3500热模拟试验机完成了变形温度为1000~1150℃,应变速率为0. 1~10 s-1,变形量分别为20%、40%和60%的热压缩试验,获得了各试验条件下GH1016合金的真应力-真应变曲线,并利用数据拟合的手段求得了GH1016合金的临界变形条件方程。同时,得到了所有变形条件下的再结晶组织,分析了变形工艺对GH1016合金的动态再结晶过程的影响规律,最终获得了GH1016合金在试验条件下的动态再结晶状态图,可为生产现场的锻造工艺的合理制定提供理论参考依据,尤其适用于GH1016合金的精锻工艺的制定和优化。

The thermal compression tests of deformation temperature range of 1000-1150℃,strain rate of 0.1-10 s-1 and deformation of20%,40%and 60%were achieved on GLEEBLE-3500 thermal-mechanical simulator.The true stress-true strain curves of GH1016 alloy were obtained,and the critical deformation condition equation of GH1016 alloy was obtained by the data fitting method.Meanwhile,the recrystallized microstructure under all deformation conditions was gained and the effect law of deformation process on dynamic recrystallization of GH1016 alloy was analyzed.Finally,the dynamic recrystallization state diagram of GH1016 alloy under test condition was drawn,which provides theoretical reference for formulating forging process reasonably in work site and is suitable for formulating and optimizing of precision forging process of GH1016 especially.