一种含富锰偏析带的热轧临界退火中锰钢的组织调控及强化机制

陈学双, 黄兴民, 刘俊杰, 吕超, 张娟

Microstructure Regulation and Strengthening Mechanisms of a Hot-Rolled & Intercritical Annealed Medium-Mn Steel Containing Mn-Segregation Band

CHEN Xueshuang, HUANG Xingmin, LIU Junjie, LV Chao, ZHANG Juan

图6 IA650样品在不同应变下的相分布图和相应的IPF

Fig.6 EBSD phase maps (a, c, e, g) and corresponding IPFs (b, d, f, h) of IA650 sample with different strains (Inset in Fig.6a is the kernel average misorientation (KAM) map of austenite grain in the selected area; the arrows in Fig.6b show that the internal orientation of some austenite grains changed significantly; the black solid circles in Figs.6e and f represent the orientation change inside a large α grain, while the dotted lines in Figs.6f and h represent the boundaries between bundle zone (I) and fragment zone (II)) (a, b) 10% strain (c, d) 20% strain (e, f) 40% strain (g, h) 60% strain