基于磁畴结构交互作用的激光刻痕取向硅钢磁致伸缩系数计算

doi:10.11900/0412.1961.2018.00242

金属学报

2019, Vol. 55

Issue (3): 362-368 DOI: 10.11900/0412.1961.2018.00242

本期目录 | 过刊浏览

基于磁畴结构交互作用的激光刻痕取向硅钢磁致伸缩系数计算

储双杰¹,杨勇杰¹,和正华²,沙玉辉²(

),左良^2,³

1. 宝山钢铁股份有限公司上海 201900
2. 东北大学材料各向异性与织构教育部重点实验室沈阳 110819
3. 中国科学院金属研究所沈阳 110016

Calculation of Magnetostriction Coefficient for Laser-Scribed Grain-Oriented Silicon Steel Based onMagnetic Domain Interaction

Shuangjie CHU¹,Yongjie YANG¹,Zhenghua HE²,Yuhui SHA²(

),Liang ZUO^2,³

1. Baoshan Iron & Steel Cooperation Limited, Shanghai 201900, China
2. Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, Northeastern University, Shenyang 110819, China
3. Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

引用本文:

储双杰,杨勇杰,和正华,沙玉辉,左良. 基于磁畴结构交互作用的激光刻痕取向硅钢磁致伸缩系数计算[J]. 金属学报, 2019, 55(3): 362-368.
Shuangjie CHU, Yongjie YANG, Zhenghua HE, Yuhui SHA, Liang ZUO. Calculation of Magnetostriction Coefficient for Laser-Scribed Grain-Oriented Silicon Steel Based onMagnetic Domain Interaction[J]. Acta Metall Sin, 2019, 55(3): 362-368.

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摘要:

基于取向硅钢磁畴结构与磁致伸缩系数的定量关系，综合考虑激光刻痕参数和取向偏差角对应力封闭畴与横向畴2种90°磁畴结构的影响，提出反映刻痕参数与取向偏差角交互作用的磁致伸缩系数计算模型。计算结果表明，取向偏差角的大小决定了激光刻痕条件下磁致伸缩行为是由横向畴还是应力封闭畴主导；激光刻痕产生的局部封闭畴与杂散磁场可降低取向偏差角引起的磁致伸缩系数。刻痕能量密度和刻痕线间距等参数对取向硅钢磁致伸缩系数影响的计算结果与实测结果相吻合，表明本工作所提模型可为降低激光刻痕取向硅钢的噪音提供理论基础。

关键词 ：磁致伸缩, 磁畴结构, 取向硅钢, 激光刻痕, 取向偏差角

Abstract：

Grain-oriented silicon steel is a key material used for iron cores of transformers because grain-oriented is most desirable for magnetic cores. With the rapid development of modern power industry, the requirement for grain-oriented silicon steel with lower magnetostriction and iron loss have exigent. Although the application of laser-scribed technology can effectively reduce iron loss by refining main magnetic domain in high permeability grain-oriented silicon steels, the influence of laser-scribing on the magnetostriction of grain-oriented silicon steel is still controversial due to the complex magnetic domain structure led by interaction among crystal orientation, surface tension and scribing parameters. In this work, a magnetostriction model for laser-scribed grain-oriented silicon steel is proposed based on the relationship between magnetostrictive coefficient and two kinds of 90° magnetic domain, stress closure domain and transverse domain, and the interaction effects of laser scribing parameters and orientation deviation angle (tilt angle of [001] easy axis out of sheet surface) are analyzed. The orientation deviation angle determines which 90° domain structure of either transverse domain or stress closure domain acts as the dominant factor for magnetostrictive behavior. The stress closure domain and stray magnetic field introduced by laser scribing can reduce the magnetostriction coefficient originated from orientation deviation angle. The theoretical calculation on the effects of laser-scribed energy density and laser-scribed spacing on magnetostriction coefficient is in agreement with the direct experimental measurement. The proposed model concerning the interaction between laser-scribing parameters and orientation deviation angle can provide the theoretical basis to reduce the noise of laser-scribed grain-oriented silicon steel.

Key words： magnetostriction magnetic domain grain-oriented silicon steel laser scribing orientation deviation angle

收稿日期: 2018-06-04

ZTFLH:

TG113.2

基金资助:国家重点研发计划项目(2016YFB0300305);国家自然科学基金项目(51671049);宝钢股份科研项目(BGFZ18A09)

作者简介: 储双杰，男，1964年生，博士

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https://www.ams.org.cn/CN/10.11900/0412.1961.2018.00242 或 https://www.ams.org.cn/CN/Y2019/V55/I3/362

图1 取向硅钢磁畴结构模型，包括取向偏差角产生的柳叶畴和横向畴及压应力产生的封闭畴

图2 不同磁畴能量和刻痕区杂散磁场能与刻痕能量密度(Ea)的关系

图3 刻痕条件下横向畴和应力封闭畴产生的磁致伸缩系数随取向偏差角的变化

图4 不同磁感应强度下取向硅钢磁致伸缩系数随Ea的变化

图5 B23P095取向硅钢在不同磁感应强度下磁致伸缩系数随Ea的变化

图6 不同取向偏差取向硅钢磁致伸缩系数随刻痕线间距的变化

表1 刻痕间距变化时取向硅钢磁致伸缩系数的计算结果与实验数据对比

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