乔家龙,郭飞虎,胡金文,仇圣桃,张兴中

• 1:钢铁研究总院连铸技术国家工程研究中心
• 2:安徽工业大学冶金与资源学院

摘要(Abstract)：

采用透射电镜(TEM)观察和第二相析出相关理论对无取向硅钢中氮化物的析出机理及其对晶粒长大的影响进行了研究。结合理论计算和检测分析表明,无取向硅钢中氮化物主要为AlN和TiN。含铝无取向硅钢中AlN和TiN在连铸过程优先在晶界形核,随着温度的降低将以位错形核为主。在均热过程中,高牌号无取向硅钢中AlN和低牌号无取向电工钢中TiN平衡析出量分别达97%和95%以上,但无铝无取向电工钢中AlN和高牌号无取向硅钢中TiN主要在热轧、卷取和退火过程中析出且尺寸较小。薄板坯流程无铝无取向电工钢中[Als]含量达到93×10~(-6)时,钢中AlN的析出将明显抑制晶粒长大。含铝无取向硅钢中的AlN将对退火过程中的晶粒长大起到抑制作用,且对低牌号无取向电工钢影响更大。

关键词(KeyWords)： 无取向硅钢;氮化物;析出机制;热力学和动力学;晶粒长大

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划(2016YFB0300305)

作者(Author): 乔家龙,郭飞虎,胡金文,仇圣桃,张兴中

DOI: 10.13289/j.issn.1009-6264.2020-0267

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