取向硅钢不同常化冷却工艺影响规律研究  

Study on the effects of different normalization cooling processes on grain-oriented silicon steel

作　　者：石超 宋程 项利 李建军[2,3] SHI Chao;SONG Cheng;XIANG Li;LI Jianjun(University of Science&Technology Beijing,School of Metallurgy and Ecological Engineering,Beijing 100083,China;National Engineering and Research Center for Continuous Casting Technology,Central Iron and Steel Research Institute,Beijing 100081,China;Metallurgical Corporation of China Co.,Ltd.,Beijing 100028,China)

机构地区：[1]北京科技大学冶金与生态工程学院,北京100083 [2]钢铁研究总院连铸技术国家工程研究中心,北京100081 [3]中国冶金科工股份有限公司,北京100028

出　　处：《电工钢》2024年第1期15-22,共8页ELECTRICAL STEEL

摘　　要：研究了空冷、40℃/s冷却速度以及水冷3种常化工艺下的取向硅钢在组织、织构以及析出相上的差异。随着常化冷却速率提高,常化板表面晶粒数量增多,而晶粒尺寸逐渐减小,将会更多地促使钢中奥氏体相转变为亚稳定相;常化后,热轧板织构并没有发生显著变化,实验钢均沿板厚方向具有较强的α线织构、较弱的γ织构和较弱的高斯织构。此外,常化板中析出相的尺寸及体积分数会随着冷却速率的增大而减小。The effects of three common cooling rates,namely air cooling,a cooling rate of 40℃/s,and water cooling,on the hot-rolled plate of a grain-oriented silicon steel were studied from the differences of microstructure,texture,and precipitate phases.As the normalizing cooling rate increased,the number of grains on the normalized plate surface increased,while the grain size gradually decreased.This would promote the transformation of austenite phases in the steel into metastable phases.After normalization,there was no significant change in the texture of the hot-rolled plate;all experimental steels exhibited a strongα-fiber texture,a weakγ-fiber texture,and a weak Goss texture along the plate thickness direction.In addition,the size and volume fraction of precipitate phases in the plate decreased as the cooling rate increased.

关 键 词：取向硅钢 常化 织构 析出相 

分 类 号：TG142.77[一般工业技术—材料科学与工程] TG156.1[金属学及工艺—金属材料]