含Bi高磁感取向硅钢二次再结晶前Bi的行为分析  

Behavior analysis on Bi before secondary recrystallization ofhigh permeability grain-oriented silicon steel

作　　者：杨佳欣 申明辉 郭小龙 宋刚 刘敏[1] 高洋 骆新根 程祥威 YANG Jiaxin;SHEN Minghui;GUO Xiaolong;SONG Gang;LIU Min;GAO Yang;LUO Xin'gen;CHENG Xiangwei(Central Research Institute(Qingshan),Baoshan Iron and Steel Co.,Ltd.,Wuhan 430080,China)

机构地区：[1]宝山钢铁股份有限公司中央研究院(青山),湖北武汉430080

出　　处：《电工钢》2023年第4期1-6,共6页ELECTRICAL STEEL

摘　　要：针对高、低温板坯加热0.27 mm厚度含Bi高磁感取向硅钢二次再结晶前不同工序的线切割试样(铸坯、热轧、常化、冷轧、脱碳退火),利用扫描电镜BSE模式对单质Bi颗粒进行观察分析、俄歇电子能谱仪对Bi的分布进行半定量分析。结果表明,钢水中未溶解的Bi会作为单质颗粒呈球形存在于铸坯等不同工序中,脱碳退火后,Bi单质颗粒析出质量百分比达最高。Bi元素偏聚规律在高、低温两种工艺生产的高磁感取向硅钢中基本类似,各工序中均存在比较明显的Bi的晶界偏聚,其中在脱碳退火后,Bi的晶界偏聚相对含量达到最大值。Based on wire-cut samples including cast slab,hot-rolled,normalized,cold-rolled and decarburized plates of 0.27 mm thickness high permeability grain-oriented silicon steel by both Bi-bearing high-temperature and low-temperature slab reheating processes,the Bi particles were observed by BSE model of SEM and the semi quantitative analysis to the distribution of Bi was conducted by auger electron spectroscopy.The results showed that the undissolved Bi in molten steel would exist in the form of elemental particles as sphericity during the following different procedure processes,and both processes had the highest precipitate percentages of Bi after decarburizing anneal.In addition,both processes had the general same segregation regularity of Bi,each procedure process having obvious grain boundary segregation,and the Bi s relative amount of grain boundary segregation up to the highest after decarburizing anneal.

关 键 词：高磁感取向硅钢 铋 晶界偏聚 

分 类 号：TG142.77[一般工业技术—材料科学与工程]