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为了研究Hi-B钢的常化工艺(二段式常化)及不同冷轧压下率(63.8%、75.2%及87.1%)对其初次再结晶退火(820℃,5 min)后织构的影响,采用CSP工艺试制以Cu2S和Al N作为抑制剂的方法进行模拟。利用NOVA400Nano SEM场发射扫描电子显微镜对初次再结晶退火后的微观织构进行EBSD数据采集,从晶粒取向、ODF分析以及特征取向线分析3个方面对织构进行分析。结果表明,经常化后再冷轧初次退火后Hi-B钢的组织更加均匀,高斯织构和有利的{111}〈112〉织构相对较多,织构间发生了转变,对产生高斯织构有利的{111}〈112〉织构为主要转变产物。在压下率为87.1%时,有良好的晶粒取向以及合适的取向线分布。
In order to study the texture of Hi-B steel (two-stage normalization) and different cold-rolling reduction rates (63.8%, 75.2% and 87.1% Of the impact, the use of CSP process trial to Cu2S and Al N as a method of simulation. The microstructure of the primary recrystallized annealed microstructure was collected by NOVA400Nano SEM field emission scanning electron microscope (EBSD), and the texture was analyzed from the aspects of grain orientation, ODF analysis and characteristic orientation line analysis. The results show that the microstructures of Hi-B steel after normalizing, cold-rolling and primary anneal are more uniform, the texture of {111} <112> is more and the texture is changed, Structured {111} <112> texture is the major transformation product. At a reduction rate of 87.1%, there is a good grain orientation and a suitable distribution of orientation lines.