冷轧压下率对低温取向硅钢组织、织构和磁性能的影响

doi:10.13251/j.issn.0254-6051.2025.10.001

摘要/Abstract

摘要： 利用EBSD、XRD和磁性能测试,研究了冷轧压下率对低温取向硅钢微观组织、织构和磁性能的影响。结果表明,低温取向硅钢冷轧织构为强α线织构和弱γ线织构,并且α取向密度峰值正比于冷轧压下率。当冷轧压下率达到90.0%和91.3%时,冷轧板中出现一定强度的Goss织构。脱碳渗氮阶段板材发生初次再结晶,冷轧纤维组织完全被等轴晶粒取代,织构类型主要为{411}<148>、{100}<012>和{111}<112>织构,表层和中心层的{411}<148>织构强度均与冷轧压下率呈正比关系。高温退火后,Goss晶粒发生异常长大。随着冷轧压下率的增大,成品板中二次再结晶Goss晶粒尺寸增加,岛晶数量减少,磁感应强度提升,铁损值降低。高冷轧压下率促进Goss种子增多和二次再结晶能力增强是低温取向硅钢磁性能提升的主要原因。

关键词: 低温取向硅钢, 冷轧压下率, Goss晶粒, 织构, 磁性能

Abstract: Influence of cold rolling reduction on microstructure, texture and magnetic properties of low-temperature grain-oriented silicon steel was studied by means of EBSD, XRD and magnetic property test. The results indicate that the cold rolling texture of the low-temperature oriented silicon steel consists of strong α-line texture and weak γ-line texture, and the peak of α orientation density is proportional to the cold rolling reduction. When the cold rolling reduction reaches 90.0% and 91.3%, a certain strength of Goss texture appears in the cold-rolled plate. During the decarburization and nitriding stage, the plate undergoes initial recrystallization, and the cold-rolled fiber structure is completely replaced by equiaxed grains. The texture are mainly {411}<148>, {100}<012> and {111}<112>. The {411}<148> texture strength of the surface and central layers is directly proportional to the cold rolling reduction. After high-temperature annealing, Goss grains undergo abnormal growth. As the cold rolling reduction increases, the grain size of secondary recrystallized Goss in the finished plate increases, the number of island crystals decreases, the magnetic induction intensity increases, and the iron loss value decreases. High cold rolling reduction promotes the increase of Goss seeds and the enhancement of secondary recrystallization ability, which are the main reasons for the improvement of magnetic properties of the low-temperature oriented silicon steel.

Key words: low-temperature grain-oriented silicon steel, cold rolling reduction, Goss grain, texture, magnetic properties

中图分类号:

TG142.1

李浩, 张海利, 李民, 贺彤, 刘晓鹏, 蒋奇武, 刘沿东. 冷轧压下率对低温取向硅钢组织、织构和磁性能的影响[J]. 金属热处理, 2025, 50(10): 1-9.

Li Hao, Zhang Haili, Li Min, He Tong, Liu Xiaopeng, Jiang Qiwu, Liu Yandong. Influence of cold rolling reduction on microstructure, texture and magnetic properties of low-temperature grain-oriented silicon steel[J]. Heat Treatment of Metals, 2025, 50(10): 1-9.

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