Cu对含Ce高强高效无取向硅钢磁性能的影响

doi:10.11896/cldb.22100266

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Abstract Magnetic and mechanical property are the two most important properties of non-oriented silicon steel which as the core component material of motor. However, there is often mutually exclusive relationship between mechanical properties and magnetic properties. The one of most key problems for the development of high-performance non-orientated silicon steels is how to obtain the comprehensive properties of high strength, high magnetic induction and low iron loss simultaneously. On the base of our previous works, a kind of high strength and efficiency non-orientated silicon steel was achieved by Cu and Ce alloying.This steel present good magnetic properties and outstanding strength, but the mechanism of Cu in this steel especially on the effect of magnetic properties is not clearly.So, in this work, the effect of Cu element on the magnetic properties of high strength and efficiency non-oriented silicon steel containing Ce was investigated by the methods of optical microscope, scanning electron microscope, electron back-scattered diffraction and transmission electron microscope, etc. The results show that there is reduction of high-frequency iron loss in non-orientated silicon steel with significant high strength by appropriate content of Cu addition. While, magnetic induction was reduced and iron loss was increased when adding more Cu element in steel. Cu-rich precipitates characterized by fine, spherical (ellipsoidal) and dispersed will precipitate in hot-rolled plate with appropriate Cu content. These precipitates will hinder dislocation moving, bring more strain energy and provide more higher driving force of recrystallization nucleation. On one hand, the recrystallization was promoted and grain uniformity was improved. Moreover, the grain growth was not significantly impeded during high temperature recrystallized annealing due to the solid solution of Cu element. These factors are beneficial to the magnetic properties. On the other hand, the formation of favorable textures was promoted and unfavorable textures forming was suppressed, which led to the improvement of magnetic induction and alleviated the negative effect of Cu-rich precipitates on the magnetic properties owing to hindering the rotation of the magnetic domain. When more Cu was added, many, large and rectangular or short rod Cu-rich precipitates were precipitated in experimental steel, naturally deteriorated the magnetic properties.

Key words： copper non-oriented silicon steel with high strength and efficiency microstructures texture magnetic properties

Published: 25 March 2024 Online: 2024-04-07

CLC number:

TG142.77

Fund:Key Laboratory of Green Fabrication and Surface Technology of Advanced Metal Materials (Anhui University of Techno-logy), Ministry of Education (GFST2020KF10), the National Natural Science Foundation of China (51604002).

Corresponding Authors: ^*yqwang@ahut.edu.cn

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	LI Na
	DING Xi'an
	WANG Yongqiang
	LU Qinyang
	ZHENG Chengsi

Cite this article:

LI Na,DING Xi'an,WANG Yongqiang, et al. Effect of Cu on the Magnetic Properties of High Strength and Efficiency Non-oriented Silicon Steel Containing Ce Element[J]. Materials Reports, 2024, 38(6): 22100266-7.

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http://www.mater-rep.com/EN/10.11896/cldb.22100266 OR http://www.mater-rep.com/EN/Y2024/V38/I6/22100266

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