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4 临界区预退火0.2C-3Mn-1.5Si中锰钢在中温连续冷却处理时的热膨胀曲线，临界区预退火后和中温连续冷却处理后微观组织的SEM像、EBSD像和Mn元素分布

Fig.4 Dilatation curve of the intercritically pre-annealed 0.2C-3Mn-1.5Si MMnS during medium-temperature continuous cooling (a); SEM images (b1, b2), EBSD-BC maps overlapped with the phase maps of austenite (c1, c2) and Mn distribution maps (d1, d2) after intercritically pre-annealing (b1-d1) and after medium-temperature continuous cooling (b2-d2) (Inset in Fig.4a shows a magnified view of the dilatation infection due to bainite transformation during continuous cooling)