Stress Dependence of Hysteresis Loss on Iron-Based Soft Magnetic Materials

IF 0.5 4区 材料科学 Q4 METALLURGY & METALLURGICAL ENGINEERING
Ijlal Hasif, M. Shimada, T. Kubota
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引用次数: 0

Abstract

Magnetic properties of soft magnetic materials under stress are important, however, they have not been fully understood. We have studied on a magnetization process of soft magnetic materials, electrical steel sheets and nanocrystalline alloys, under stress, by investigating DC magnetization curves. As well known, a hysteresis loss of electrical steel sheets increases under compression. We found that the hysteresis loss of nanocrystalline alloys does not depend on stress. In this paper, experimental results and an interpretation on the loss mechanism were described. We have interpreted the magnetization process under compression as follows: magnetic domains distribute perpendicular to compression due to magnetoelasticity; the magnetization process is 90 degree domain wall movements in the domains. Based on this interpretation, the hysteresis loss under compression is well understood. Electrical steel sheets have crystal grains; so, the domain wall is trapped at the grain boundary in the movement process; then, hysteresis loss generates. On the other hand, nanocrytalline alloys have no crystal grains; therefore, the domain wall movement is smoothly and there is no hysteresis loss. [doi:10.2320/jinstmet.J2017024]
铁基软磁材料磁滞损失的应力依赖性
软磁材料在应力作用下的磁性是很重要的,但人们对其还没有完全了解。通过对直流磁化曲线的研究,研究了软磁材料——电工钢板和纳米晶合金在应力作用下的磁化过程。众所周知,在压缩条件下,电钢板的迟滞损耗增大。我们发现纳米晶合金的迟滞损失不依赖于应力。本文描述了实验结果和对损耗机理的解释。我们将压缩下的磁化过程解释为:由于磁弹性,磁畴垂直于压缩分布;磁化过程为畴内畴壁的90度运动。基于这一解释,很好地理解了压缩下的迟滞损失。电工钢板有晶粒;因此,在运动过程中,畴壁被困在晶界处;然后产生迟滞损耗。另一方面,纳米晶合金没有晶粒;因此,畴壁运动平稳,无迟滞损失。(doi: 10.2320 / jinstmet.J2017024)
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来源期刊
Journal of The Japan Institute of Metals
Journal of The Japan Institute of Metals 工程技术-冶金工程
CiteScore
0.70
自引率
0.00%
发文量
27
审稿时长
6-12 weeks
期刊介绍: Information not localized
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