终轧温度与常化时间对高强无取向硅钢析出物的影响  

Effect of final rolling temperature and normalizing time on precipitates of high-grade non-oriented silicon steel

作　　者：刘朋成 郝娟娟 吴忠旺[2] 李宗维 孙婷婷[2] LIU Pengcheng;HAO Juanjuan;WU Zhongwang;LI Zongwei;SUN Tingting(Technology Center,Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,China;School of Materials and Metallurgy,Inner Mongolia University of Science and Technology,Baotou 014010,China)

机构地区：[1]内蒙古包钢钢联股份有限公司技术中心,内蒙古包头014010 [2]内蒙古科技大学材料与冶金学院,内蒙古包头014010

出　　处：《电工钢》2024年第4期27-34,共8页ELECTRICAL STEEL

基　　金：内蒙古自治区科技支撑黄河流域生态保护和高质量发展项目(2023YFHH0017,2023YFHH0026)。

摘　　要：系统研究了不同终轧温度及常化时间对高强无取向硅钢中析出物析出行为的影响,结果表明:常化板、冷轧脱碳板和成品板中析出物类型相似,主要包括AlN+Nb(C, N)+Ti(C, N)复合析出物及以AlN和Ce(S, O)为中心的球状含稀土复合析出物。适当提高终轧温度、延长常化时间,常化板中析出物尺寸增大,面密度下降,且此趋势最终遗传到成品板中。终轧温度为1 000℃、常化时间为5 min时,成品板析出物尺寸集中分布在0.3~1.0μm范围内,析出物面密度为79个/1 000μm^(2)。In this paper, the effects of different final rolling temperature and normalization time on the precipitation behavior of high-strength non-oriented silicon steel were systematically studied. The results showed that the types of precipitates in normalized plates, cold-rolled decarburized plates and final annealed plates are similar, mainly including AlN+Nb(C, N)+Ti(C, N) composite precipitates and AlN and Ce(S, O)-centered complex precipitates containing rare earth. The size of precipitates in the normalized plate increases and the surface density decreases when the final rolling temperature is increased and the normalization time is prolonged. And this trend was eventually inherited into the final annealed plate. When the final rolling temperature was 1 000 ℃ and the normalization time was 5 min, the size of precipitates is concentrated in the range of 0.3~1.0 μm, and the surface density of precipitates is 79 pieces/1 000 μm^(2).

关 键 词：无取向硅钢 终轧温度 常化时间 析出物 

分 类 号：TG142.77[一般工业技术—材料科学与工程]