摘要
本文建立了一种新的Ｃ－Ｍｎ钢奥氏体动态回复、动态再结晶热变形流变曲线模型，考察了动态再结晶特征应力、应变，例如σ＿ｓ、σ＿ｐ及ε＿ｃ同热变形工艺参数间的关系模型。依据Ｅｎｇｌｅ－Ｂｒｅｗｅｒ理论，提出了预测Ｚ参数激活能的表象公式，创立了一种运用最优化技术求解流变应力模型中应力指数、形变激活能等待定参数的新方法。
A computer model for simulating the hot deforming flow curves of C-Mn steel is developed. Mathemetical models of Characteristic stresses and strains of DRX,such asσp,σs andεc.are investigated.A phenomelogical formula to predict the active energy of the Zener-Holloman parameter is proposed based on the Engle-Brewer theory The optimizing technology is employed to resolve the stress index,active energy and undetermined constants from the flow curve model.
基金
冶金部教育司有偿资助
关键词
金属
热变形
动态回复
动态再结晶
计算机模拟
s:Hot deformation:Dynamic recovery:Dynamic recrystallization
True straintrue stress Curve
Computer simulation
