Mathematical Modeling of Phase Transformation from Hot-deformed Austenite in Low Carbon Steels
On the basis of superelement model,Cahn”s transformation kinetics theory and Scheil”s ad-ditivity rule,the CCT diagrams and transformation kinetics in low carbon steel were predicted considering both undeformed and deformed conditions. The influence of deformation on phase equilibria and transformation incubation period was evaluated quantitatively. The recrystallization kinetics and the evolution of dislocation density were calculated during continuous cooling.The results show deformation considerably shortens transformation incubation period, accelerates transformation kinetics and makes CCT curve shift leftwards. The calculated CCT diagrams and the volume fraction of each phase were in good agreement with measurements.
热力学 转变动力学 热变形奥氏体 数学模型 低碳钢
XU Yun-bo WANG Guo-dong LIU Xiang-hua
Northestern University, State Key Laboratory of Rolling and Automation
国内会议
上海
英文
211-216
2004-05-27（万方平台首次上网日期，不代表论文的发表时间）