Effect of Primary Recrystallized Microstructure on the Secondary RecrystallizationBehaviors in Low Temperature Thin-gauge Grain-oriented Silicon Steel
HE Chengxu1, MA Guang1, CHEN Xin1, YANG Fuyao1, CHENG Ling1, YANG Yongjie2, HU Zhuochao2, MENG Li3
1 State Key Laboratory of Advanced Power Transmission Technology, Global Energy Interconnection Research Institute Co., Ltd., Beijing 102211, China; 2 Baoshan Iron and Steel Co., Ltd., Shanghai 200940, China; 3 Central Iron and Steel Research Institute, Beijing 100081, China
Abstract: Sharp Goss texture in grain-oriented electrical steel needs the occurrence of fully secondary recrystallization during high temperature annealing. Given that suitable primary recrystallized microstructure is one of the key factors for abnormal Goss grain growth, it is essential to investigate the primary recrystallization microstructure evolution. Microstructures of primary recrystallization under different decarburization annealing time of low temperature thin-gauge grain-oriented silicon steel were investigated, and the influence of primary recrystallization microstructure on secondary recrystallization behavior was studied. The results show that optimum decarburization annealing time is about 3 min at 880 ℃, complete secondary recrystallization can occur during high temperature annelaing. With decarburization annealing time prolonged, the average primary recrystallized grain size increased, while secondary recrystallization is more incomplete, “fine grains” is appeared after high temperature annelaing. It could be concluded that the instability of secondary recrystallization is mainly caused by {100} 〈025〉 grains growth in the central layer, the orientation of “fine grain” without secondary recrystallization is also {100} 〈025〉 grains.
何承绪, 马光, 陈新, 杨富尧, 程灵, 杨勇杰, 胡卓超, 孟利. 低温薄规格取向硅钢初次再结晶组织对二次再结晶行为的影响[J]. 材料导报, 2020, 34(Z1): 457-461.
HE Chengxu, MA Guang, CHEN Xin, YANG Fuyao, CHENG Ling, YANG Yongjie, HU Zhuochao, MENG Li. Effect of Primary Recrystallized Microstructure on the Secondary RecrystallizationBehaviors in Low Temperature Thin-gauge Grain-oriented Silicon Steel. Materials Reports, 2020, 34(Z1): 457-461.
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2020, Vol. 34 
