动态再结晶晶粒尺寸同Zener─Holloman参数间的理论模型

Dependence of Dynamically Recrystallized Grain Size with Zener-Holloman Parameter

本文推导了稳定动态再结晶晶粒尺寸同形变Ｚ参数间的理论模型，证实了Ｓｅｌｌａｒｓ等人的经验公式Ｄ＝ＣＺ￣（－ｎ＿Ｄ）。研究表明，Ｃ参数为几乎不受温度影响的常数。建立了ｎ＿Ｄ的预测模型，ｎ＿Ｄ理论值同实验值相一致。

A theoretical model to investigate the change of dynamically recrystallized grain size with the Zener-Holloman parameter is developed,which confirms the validity of the phenomelogical formula D=CZ-nD proposed by Sellars.it is demonstrated that parameter C is hardly influenced by temperature and predicted nD value is idential with the experimented.