Effect of rolling reduction on microstructure, texture and magnetic properties of twin-roll casting non-oriented 6.5 wt% Si electrical steel

doi:10.1016/j.jmmm.2021.168897

IMR OpenIR

	Effect of rolling reduction on microstructure, texture and magnetic properties of twin-roll casting non-oriented 6.5 wt% Si electrical steel
	Li, Haoze
通讯作者	Li, Haoze(lihz@imr.ac.cn)
	2022-03-15
发表期刊	JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
ISSN	0304-8853
卷号	546 页码:16
摘要	In this study, an as-cast strip of non-oriented 6.5 wt% Si electrical steel with an equiaxed structure was fabricated by twin-roll strip casting and then treated by hot and warm rolling with different reductions, and annealing. The results showed that the as-cast microstructure was gradually pancaked and then underwent dynamic and static recrystallization as the hot rolling reduction exceeded 52%. The subsequent warm rolling brought about shear bands in part of the deformed grains. The texture evolution in the multiple rolling routes basically conformed to the classical gain-orientation rotating paths. The {00 1}-{1 1 8} (110), {223} (110) and {111} (110) texture components were intensified after warm rolling. A decreased hot rolling reduction accompanied by an increased warm rolling reduction raised the number of shear bands in the warm rolled sheets and decreased the annealing grain size. An improper combination of hot and warm rolling reductions tended to make the gamma nuclei gain the superiority in number through grain-boundary or shear-band nucleation, leading to the prevalence of the gamma annealing texture. By comparison, an alternative rolling regime adopting moderate hot (-50%) and warm rolling (-70%) reductions promoted the oriented nucleation of lambda, {1 1 4} (481) and many other non-gamma nuclei in shear bands of the {223} (110) deformed grains which had already acquired a high volume fraction in the warm rolled sheet. Consequently, mixed lambda, alpha* and gamma annealing textures were formed, giving rise to enhanced magnetic properties. The combined oriented nucleation and oriented growth mechanism was responsible for the overall evolutions of the annealing textures.
关键词	Non -oriented 6 5 wt% Si electrical steel Twin-roll casting Microstructure Texture Magnetic property
资助者	National Natural Science Foundation of China
DOI	10.1016/j.jmmm.2021.168897
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51801221]
WOS研究方向	Materials Science ; Physics
WOS类目	Materials Science, Multidisciplinary ; Physics, Condensed Matter
WOS记录号	WOS:000777266100001
出版者	ELSEVIER
引用统计	被引频次：9[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/172846
专题	中国科学院金属研究所
通讯作者	Li, Haoze
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang, Peoples R China
推荐引用方式 GB/T 7714	Li, Haoze. Effect of rolling reduction on microstructure, texture and magnetic properties of twin-roll casting non-oriented 6.5 wt% Si electrical steel[J]. JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,2022,546:16.
APA	Li, Haoze.(2022).Effect of rolling reduction on microstructure, texture and magnetic properties of twin-roll casting non-oriented 6.5 wt% Si electrical steel.JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,546,16.
MLA	Li, Haoze."Effect of rolling reduction on microstructure, texture and magnetic properties of twin-roll casting non-oriented 6.5 wt% Si electrical steel".JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS 546(2022):16.