不同成分体系无取向电工钢中夹杂物和析出物对比

电工钢 ›› 2019, Vol. 1 ›› Issue (1): 37-41.

不同成分体系无取向电工钢中夹杂物和析出物对比

任强1，程林2，胡志远2，张立峰1

1. 北京科技大学冶金与生态工程学院，北京 100083；2. 首钢智新迁安电磁材料有限公司产品研发部，河北迁安 064400

出版日期:2019-10-28 发布日期:2020-07-13

Comparison of inclusions and precipitates in different grade nonoriented electrical steels

REN Qiang1， CHENG Lin2， HU Zhiyuan2， ZHANG Lifeng1

1.School of Metallurgical and Ecological Engineering，University of Science and TechnologyBeijing，Beijing 100083，China；2.Shougang Zhixin Qian’an Electromagnetic Material Co.,Ltd., Department of Product Development，Qian’an 064400，China

Online:2019-10-28 Published:2020-07-13

摘要/Abstract

摘要： 采用ASPEX自动扫描电镜和场发射扫描电镜，分析了不同铝、硅质量分数的无取向电工钢中的夹杂物和析出物的种类和形貌特征。采用FactSage热力学软件对夹杂物和析出物的形成进行了热力学分析。随着无取向电工钢中铝质量分数增加，氧化物类型转变规律为SiO2-Al2O3-MnO→Al2O3→MgO·Al2O3。对于铝脱氧无取向电工钢，氮化物类型为多边形的AlN。钢中铝质量分数和AlN的平均尺寸之间符合以下公式：{d}μm=3.75·[%Al]-0.57。随着铝质量分数增加，对耐火材料的侵蚀逐渐增强，钢中的镁质量分数逐渐增加。随着无取向电工钢中镁质量分数增加和硫含量降低，硫化物的转变规律为：(Mn,Cu)S→(Mn,Mg)S→MgS。

关键词: 夹杂物, 析出物, 无取向电工钢

Abstract: In the current study, automatic scanning electron microscope and field emission scanning electron microscope were employed to analyze types and morphologies of inclusions and precipitates in nonoriented electrical steels. A thermodynamic software FactSage was conducted to analyze the inclusion formation behavior. With the increase of aluminum content, oxide inclusions changed with the the sequence of SiO2-Al2O3-MnO→Al2O3→MgO·Al2O3. For Aldeoxidized nonoriented electrical steels, angular AlN was the dominative nitride. Besides, the relationship between the average size of AlN and Al content was {d}μm=3.75·[%Al]-0.57. The content of Mg increased with the increasing Al content. With the increase of magnesium content and the decrease of sulfur, sulfides changed with the sequence of (Mn,Cu)S→(Mn,Mg)S→MgS.

Key words: Inclusions, precipitates, nonoriented electrical steel

任强, 程林, 胡志远, 张立峰. 不同成分体系无取向电工钢中夹杂物和析出物对比[J]. 电工钢, 2019, 1(1): 37-41.

REN Qiang, CHENG Lin, HU Zhiyuan, ZHANG Lifeng. Comparison of inclusions and precipitates in different grade nonoriented electrical steels[J]. Electrical Steel, 2019, 1(1): 37-41.