Prediction of Rolling Load, Recrystallization Kinetics, and Microstructure During Hot Strip Rolling

钢铁研究学报(英文版), 2007, 14(6): 42-46.

^1, , ^2, , ^3, , ^4,

1.State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, Liaoning, China

2.State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, Liaoning, China

3.State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, Liaoning, China

4.State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, Liaoning, China

基金项目: 国家自然科学基金(50504007;50474086;50334010)

Prediction of Rolling Load, Recrystallization Kinetics, and Microstructure During Hot Strip Rolling

XU Yun-bo ^1, , YU Yong-mei ^2, , LIU Xiang-hua ^3, , WANG Guo-dong ^4,

1.State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, Liaoning, China

2.State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, Liaoning, China

3.State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, Liaoning, China

4.State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110004, Liaoning, China

Keywords： hot strip rolling

The recrystallization kinetics and grain size models were developed for the C-Mn and niobium-containing steels to describe the metallurgical phenomenon such as softening, grain growth, and strain accumulation. Based on the recrystallization kinetics equations, the mean flow stress and the rolling load of each pass were predicted and the optimum rolling schedule was proposed for hot strip rolling. The austenite grain refinement is associated with the addition of niobium, the decrease of starting temperature of finish rolling, and the reduction of finished thickness. The mean flow stress curve with a continuous rising characteristic can be usually observed in the finish rolling of niobiumcontaining steel, which is formed as a result of the heavy incomplete softening and strain accumulation. The predicted rolling loads are in good agreement with the measured ones.

参考文献

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Prediction of Rolling Load, Recrystallization Kinetics, and Microstructure During Hot Strip Rolling

参考文献