预先Mn配分对中锰钢中温连续冷却过程中贝氏体相变的影响

郑沁园, 刘朋, 路轶, 朱海龙, 郑成武, 栾义坤, 李殿中

Effect of Mn Pre-Partitioning on Bainite Transformation During Medium-Temperature Continuous Cooling of Medium Mn Steel

ZHENG Qinyuan, LIU Peng, LU Yi, ZHU Hailong, ZHENG Chengwu, LUAN Yikun, LI Dianzhong

图1 中锰钢中温连续冷却过程的示意图

Fig.1 Schematic of the continuous cooling process from medium temperature in medium Mn steel (Ae3—the highest temperature at which ferrite and austenite phases can coexist in equilibrium, Ae1—the lowest temperature at which ferrite, cementite, and austenite phases can coexist in equilibrium, C˙—cooling rate, Ts—start cooling temperature. PA—prior austeniting annealing, PI—prior intercritical annealing, CB—continuous cooling with bainite transformation)