郎雨琪 黎先浩 赵鹏飞 王德坤 朱博严 刘家凤 从道永. 高磁感取向硅钢大面积磁畴形态与饱和磁感应强度和铁损的关系[J]. 金属学报, DOI: 10.11900/0412.1961.2025.00082.

摘要 相关文章 Metrics 全文: PDF(1264 KB)   摘要: 取向硅钢的磁畴显著影响其磁性能，但是现有研究多集中于局部磁畴观察，关于大面积磁畴形态与宏观磁性能关系的研究鲜有报道。为了深入理解磁畴形态与磁性能之间的关系，本工作利用大面积磁畴观察和统计方法(粉纹法)，结合前散射探测器(FSD)磁畴成像法与电子背散射衍射技术，对取向硅钢大面积磁畴形态、微区精细磁畴形态和晶体取向进行了系统研究，深入探讨了磁畴形态与饱和磁感应强度(B800)和铁损之间的关系。结果表明，在晶粒形态和数量相近的情况下，随着180°主畴偏离轧向< 2°的面积分数和主畴平均宽度的增加，B800升高，铁损降低；晶粒取向偏离角(α和β)的平均值越小、分布范围越窄，B800越高，铁损越低。微区磁畴观察和晶体取向分析结果表明，小角度晶界不会阻碍磁畴穿过，但随着取向差的增大，晶界附近会出现楔形畴，而大角度晶界会阻碍磁畴的穿过。岛晶和细晶粒的取向均显著偏离Goss织构，其与周围晶粒之间通常形成大角度晶界，晶粒内部磁畴为条状畴、柳叶刀畴等附加畴，会阻碍磁畴的运动，降低样品的磁性能。 关键词 ： 取向硅钢,  磁畴形态,  磁性能,  晶体取向,  铁损,  饱和磁感,  电子背散射衍射,  前散射探测器     Abstract：Grain-oriented silicon steel (GOSS) is a key soft magnetic material used in electrical devices such as motors and transformers. Optimizing its magnetic properties remains a research focus in materials science and electromagnetics. Magnetic domain morphology, a critical factor influencing magnetic properties, directly determines the key characteristics of silicon steel, including saturation magnetic flux density (B800) and core loss, thereby impacting its energy efficiency in practical applications. Therefore, elucidating the intrinsic relationships among domain morphology, crystallographic orientation, and magnetic properties is important for developing high-performance silicon steel. However, current research predominantly focuses on local domain observations, while the relationships among large-area domain morphology, crystallographic orientation, and macroscopic magnetic properties are rarely studied. To address this gap, the large-area domain morphology, fine microscale domain structures, and crystallographic orientations of GOSS were systematically investigated using large-scale domain observation method (Bitter method) combined with forescatter detector domain imaging and electron backscatter diffraction. The relationships between domain structures and magnetic properties, including B800 and iron loss, were thoroughly examined. The results show that increasing both the area fraction of 180° primary domains with less than 2° deviation from the rolling direction and the average width of the primary domains enhances B800 while reducing iron loss. Moreover, smaller average in-plane deviation angle (α) and out-of-plane deviation angle (β) of the ⟨100⟩ easy-magnetization axis from the rolling direction or rolling plane, as well as more concentrated α and β distributions, are associated with higher B800 and lower iron loss. Furthermore, the presence of island grains and fine-grained microstructures possibly leads to a decrease in B800 and an increase in iron loss. Microdomain observations and crystallographic orientation analyses reveal that low-angle grain boundaries do not impede domain transfer and that wedge-shaped domains form near boundaries with increasing misorientation. Additionally, unlike low-angle grain boundaries, high-angle grain boundaries completely block domain transfer. The orientations of both island grains and fine grains substantially deviate from the Goss texture, typically forming high-angle grain boundaries with surrounding coarse secondary recrystallized grains. The magnetic domains within these finer grains—primarily supplementary domains such as strip and lancet domains—obstruct the movement of 180° primary domains during magnetization, thereby degrading the overall magnetic properties of the material. Key words： grain-oriented silicon steel    magnetic domain    magnetic property    crystal orientation    iron loss    saturation magnetic flux density    electron backscatter diffraction    forescatter detector 收稿日期: 2025-03-31      ZTFLH:  TG113.22   基金资助:国家自然科学基金项目 服务 把本文推荐给朋友 加入引用管理器 E-mail Alert RSS 作者相关文章 郎雨琪 黎先浩 赵鹏飞 王德坤 朱博严 刘家凤 从道永 44.8K 链接本文: https://www.ams.org.cn/CN/Y0/V/I/0 [1] 朱春健, 李艳辉, 朱正旺, 吴立成, 张海峰, 张伟. 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