Microstructure Characteristics and Strengthening Behavior of Cu-Bearing Non-Oriented Silicon Steel: Conventional Process versus Strip Casting

Based on conventional hot rolling processes and strip casting processes, Cu precipitation strengthening is used to improve the strength of non-oriented silicon steel in order to meet the requirements of high-speed driving motors of electric vehicles. Microstructure evolution was studied, and the eff...

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Autores principales:	Feng Fang, Diwen Hou, Zhilei Wang, Shangfeng Che, Yuanxiang Zhang, Yang Wang, Guo Yuan, Xiaoming Zhang, Raja Devesh Kumar Misra, Guodong Wang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	non-oriented silicon steel Cu precipitation magnetic properties mechanical properties strip casting Mining engineering. Metallurgy TN1-997
Acceso en línea:	https://doaj.org/article/f75356fcc74a434da0b321c09e6289ca
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spelling	oai:doaj.org-article:f75356fcc74a434da0b321c09e6289ca2021-11-25T18:22:10ZMicrostructure Characteristics and Strengthening Behavior of Cu-Bearing Non-Oriented Silicon Steel: Conventional Process versus Strip Casting10.3390/met111118152075-4701https://doaj.org/article/f75356fcc74a434da0b321c09e6289ca2021-11-01T00:00:00Zhttps://www.mdpi.com/2075-4701/11/11/1815https://doaj.org/toc/2075-4701Based on conventional hot rolling processes and strip casting processes, Cu precipitation strengthening is used to improve the strength of non-oriented silicon steel in order to meet the requirements of high-speed driving motors of electric vehicles. Microstructure evolution was studied, and the effects of Cu precipitates on magnetic and mechanical properties are discussed. Compared with conventional processes, non-oriented silicon steel prepared by strip casting exhibited advantages with regard to microstructure optimization with coarse grain and {100} texture. Two-stage rolling processes were more beneficial for uniform microstructure, coarse grains and improved texture. The high magnetic induction B<sub>50</sub> of 1.762 T and low core losses with P<sub>1.5/50</sub>, P<sub>1.0/400</sub> and P<sub>1.0/1000</sub> of 1.93, 11.63 and 44.87 W/kg, respectively, were obtained in 0.20 mm sheets in strip casting. Cu precipitates significantly improved yield strength over ~120 MPa without deteriorating magnetic properties both in conventional process and strip casting. In the peak stage aged at 550 °C for 120 min, Cu precipitates retained bcc structure and were coherent with the matrix, and the yield strength of the 0.20 mm sheet was as high as 501 MPa in strip casting. The main mechanism of precipitation strengthening was attributed to coherency strengthening and modulus strengthening. The results indicated that balanced magnetic and mechanical properties can be achieved in thin-gauge non-oriented silicon steel with Cu addition in strip casting.Feng FangDiwen HouZhilei WangShangfeng CheYuanxiang ZhangYang WangGuo YuanXiaoming ZhangRaja Devesh Kumar MisraGuodong WangMDPI AGarticlenon-oriented silicon steelCu precipitationmagnetic propertiesmechanical propertiesstrip castingMining engineering. MetallurgyTN1-997ENMetals, Vol 11, Iss 1815, p 1815 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	non-oriented silicon steel Cu precipitation magnetic properties mechanical properties strip casting Mining engineering. Metallurgy TN1-997
spellingShingle	non-oriented silicon steel Cu precipitation magnetic properties mechanical properties strip casting Mining engineering. Metallurgy TN1-997 Feng Fang Diwen Hou Zhilei Wang Shangfeng Che Yuanxiang Zhang Yang Wang Guo Yuan Xiaoming Zhang Raja Devesh Kumar Misra Guodong Wang Microstructure Characteristics and Strengthening Behavior of Cu-Bearing Non-Oriented Silicon Steel: Conventional Process versus Strip Casting
description	Based on conventional hot rolling processes and strip casting processes, Cu precipitation strengthening is used to improve the strength of non-oriented silicon steel in order to meet the requirements of high-speed driving motors of electric vehicles. Microstructure evolution was studied, and the effects of Cu precipitates on magnetic and mechanical properties are discussed. Compared with conventional processes, non-oriented silicon steel prepared by strip casting exhibited advantages with regard to microstructure optimization with coarse grain and {100} texture. Two-stage rolling processes were more beneficial for uniform microstructure, coarse grains and improved texture. The high magnetic induction B<sub>50</sub> of 1.762 T and low core losses with P<sub>1.5/50</sub>, P<sub>1.0/400</sub> and P<sub>1.0/1000</sub> of 1.93, 11.63 and 44.87 W/kg, respectively, were obtained in 0.20 mm sheets in strip casting. Cu precipitates significantly improved yield strength over ~120 MPa without deteriorating magnetic properties both in conventional process and strip casting. In the peak stage aged at 550 °C for 120 min, Cu precipitates retained bcc structure and were coherent with the matrix, and the yield strength of the 0.20 mm sheet was as high as 501 MPa in strip casting. The main mechanism of precipitation strengthening was attributed to coherency strengthening and modulus strengthening. The results indicated that balanced magnetic and mechanical properties can be achieved in thin-gauge non-oriented silicon steel with Cu addition in strip casting.
format	article
author	Feng Fang Diwen Hou Zhilei Wang Shangfeng Che Yuanxiang Zhang Yang Wang Guo Yuan Xiaoming Zhang Raja Devesh Kumar Misra Guodong Wang
author_facet	Feng Fang Diwen Hou Zhilei Wang Shangfeng Che Yuanxiang Zhang Yang Wang Guo Yuan Xiaoming Zhang Raja Devesh Kumar Misra Guodong Wang
author_sort	Feng Fang
title	Microstructure Characteristics and Strengthening Behavior of Cu-Bearing Non-Oriented Silicon Steel: Conventional Process versus Strip Casting
title_short	Microstructure Characteristics and Strengthening Behavior of Cu-Bearing Non-Oriented Silicon Steel: Conventional Process versus Strip Casting
title_full	Microstructure Characteristics and Strengthening Behavior of Cu-Bearing Non-Oriented Silicon Steel: Conventional Process versus Strip Casting
title_fullStr	Microstructure Characteristics and Strengthening Behavior of Cu-Bearing Non-Oriented Silicon Steel: Conventional Process versus Strip Casting
title_full_unstemmed	Microstructure Characteristics and Strengthening Behavior of Cu-Bearing Non-Oriented Silicon Steel: Conventional Process versus Strip Casting
title_sort	microstructure characteristics and strengthening behavior of cu-bearing non-oriented silicon steel: conventional process versus strip casting
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f75356fcc74a434da0b321c09e6289ca
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Microstructure Characteristics and Strengthening Behavior of Cu-Bearing Non-Oriented Silicon Steel: Conventional Process versus Strip Casting

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