Numerical Simulation of Austenite Recrystallization in CSP Hot Rolled C��Mn Steel Strip
TANG Guang��bo1,2,LIU Zheng��dong2,DONG Han2,GAN Yong3, KANG Yong��lin1,LI Lie��jun4,MAO Xin��ping4
1. School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. Institute for Structural Materials, Central Iron and Steel Research Institute, Beijing 100081, China; 3. Central Iron and Steel Research Institute, Beijing 100081, China;4. Guangzhou Zhujiang Iron and Steel Co Ltd, Guangzhou 510730, Guangdong, China
Numerical Simulation of Austenite Recrystallization in CSP Hot Rolled C��Mn Steel Strip
TANG Guang��bo1,2,LIU Zheng��dong2,DONG Han2,GAN Yong3, KANG Yong��lin1,LI Lie��jun4,MAO Xin��ping4
1. School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. Institute for Structural Materials, Central Iron and Steel Research Institute, Beijing 100081, China; 3. Central Iron and Steel Research Institute, Beijing 100081, China;4. Guangzhou Zhujiang Iron and Steel Co Ltd, Guangzhou 510730, Guangdong, China
ժҪ An integrated mathematical model is developed to predict the microstructure evolution of C��Mn steel during multipass hot rolling on the CSP production line, and the thermal evolution, the temperature distribution, the deformation, and the austenite recrystallization are simulated. The characteristics of austenite recrystallization of hot rolled C��Mn steel in the CSP process are also discussed. The simulation of the microstructure evolution of C��Mn steel ZJ510L during CSP multipass hot rolling indicates that dynamic recrystallization and metadynamic recrystallization may easily occur in the first few passes, where nonuniform recrystallization and inhomogeneous grain size microstructure may readily occur; during the last few passes, static recrystallization may occur dominantly, and the microstructure will become more homogeneous and partial recrystallization may occur at relatively low temperature.
Abstract��An integrated mathematical model is developed to predict the microstructure evolution of C��Mn steel during multipass hot rolling on the CSP production line, and the thermal evolution, the temperature distribution, the deformation, and the austenite recrystallization are simulated. The characteristics of austenite recrystallization of hot rolled C��Mn steel in the CSP process are also discussed. The simulation of the microstructure evolution of C��Mn steel ZJ510L during CSP multipass hot rolling indicates that dynamic recrystallization and metadynamic recrystallization may easily occur in the first few passes, where nonuniform recrystallization and inhomogeneous grain size microstructure may readily occur; during the last few passes, static recrystallization may occur dominantly, and the microstructure will become more homogeneous and partial recrystallization may occur at relatively low temperature.
2007, Vol. 14 
