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Title: Microstructure, texture evolution and magnetic properties of strip-casting non-oriented 6.5 wt.% Si electrical steel doped with cerium

Abstract

A 0.3 mm thick non-oriented 6.5 wt.% Si electrical steel sheet doped with cerium is produced by twin-roll strip casting, hot rolling, warm rolling and annealing. A detailed study of the cerium precipitates in the as-cast strip, microstructure and texture evolution at different processing stages is carried out by electron probe micro-analysis, optical microscopy, X-ray diffraction and electron backscattered diffraction analysis. Grain interior distributing precipitates identified as Ce-oxides, Ce-oxysulfides and Ce-phosphides, and boundary distributing Ce-oxides and Ce-phosphides are observed in the as-cast strip. The initial as-cast strip is characterized by a much finer solidification microstructure and dominated by obvious < 001 >//ND texture through the strip thickness. After hot and warm rolling, inhomogeneous microstructure containing large amounts of in-grain shear bands is characterized by mixed < 110 >//RD and < 111 >//ND textures. The texture of the annealed sheet with a relatively large average grain size is far more optimized by the domination of the beneficial cube, rotated cube, (001)< 120 > to (001)< 130 > and Goss texture components, and the elimination of the detrimental γ-fiber texture, leading to a superior magnetic induction and improved iron loss. - Highlights: • An Fe–6.5 wt.% Si as-cast strip doped with ceriummore » was produced. • A thin warm rolled sheet with limited edge cracks was obtained. • Microstructure and texture evolution at each stage were investigated. • Strong λ-fiber and Goss recrystallization textures were formed. • The magnetic properties of the annealed sheet were significantly improved.« less

Authors:
; ; ;
Publication Date:
OSTI Identifier:
22476088
Resource Type:
Journal Article
Journal Name:
Materials Characterization
Additional Journal Information:
Journal Volume: 103; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1044-5803
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; ANNEALING; CASTINGS; CERIUM ADDITIONS; DOPED MATERIALS; ELECTRON MICROPROBE ANALYSIS; FIBERS; GRAIN SIZE; MAGNETIC PROPERTIES; OXIDES; OXYSULFIDES; PRECIPITATION; RECRYSTALLIZATION; ROLLING; SILICON COMPOUNDS; SOLIDIFICATION; STEELS; TEXTURE; THICKNESS; X-RAY DIFFRACTION

Citation Formats

Li, Hao-Ze, E-mail: lhzqq83@163.com, Liu, Hai-Tao, Liu, Zhen-Yu, E-mail: zyliu@mail.neu.edu.cn, and Wang, Guo-Dong. Microstructure, texture evolution and magnetic properties of strip-casting non-oriented 6.5 wt.% Si electrical steel doped with cerium. United States: N. p., 2015. Web. doi:10.1016/J.MATCHAR.2015.03.024.
Li, Hao-Ze, E-mail: lhzqq83@163.com, Liu, Hai-Tao, Liu, Zhen-Yu, E-mail: zyliu@mail.neu.edu.cn, & Wang, Guo-Dong. Microstructure, texture evolution and magnetic properties of strip-casting non-oriented 6.5 wt.% Si electrical steel doped with cerium. United States. doi:10.1016/J.MATCHAR.2015.03.024.
Li, Hao-Ze, E-mail: lhzqq83@163.com, Liu, Hai-Tao, Liu, Zhen-Yu, E-mail: zyliu@mail.neu.edu.cn, and Wang, Guo-Dong. Fri . "Microstructure, texture evolution and magnetic properties of strip-casting non-oriented 6.5 wt.% Si electrical steel doped with cerium". United States. doi:10.1016/J.MATCHAR.2015.03.024.
@article{osti_22476088,
title = {Microstructure, texture evolution and magnetic properties of strip-casting non-oriented 6.5 wt.% Si electrical steel doped with cerium},
author = {Li, Hao-Ze, E-mail: lhzqq83@163.com and Liu, Hai-Tao and Liu, Zhen-Yu, E-mail: zyliu@mail.neu.edu.cn and Wang, Guo-Dong},
abstractNote = {A 0.3 mm thick non-oriented 6.5 wt.% Si electrical steel sheet doped with cerium is produced by twin-roll strip casting, hot rolling, warm rolling and annealing. A detailed study of the cerium precipitates in the as-cast strip, microstructure and texture evolution at different processing stages is carried out by electron probe micro-analysis, optical microscopy, X-ray diffraction and electron backscattered diffraction analysis. Grain interior distributing precipitates identified as Ce-oxides, Ce-oxysulfides and Ce-phosphides, and boundary distributing Ce-oxides and Ce-phosphides are observed in the as-cast strip. The initial as-cast strip is characterized by a much finer solidification microstructure and dominated by obvious < 001 >//ND texture through the strip thickness. After hot and warm rolling, inhomogeneous microstructure containing large amounts of in-grain shear bands is characterized by mixed < 110 >//RD and < 111 >//ND textures. The texture of the annealed sheet with a relatively large average grain size is far more optimized by the domination of the beneficial cube, rotated cube, (001)< 120 > to (001)< 130 > and Goss texture components, and the elimination of the detrimental γ-fiber texture, leading to a superior magnetic induction and improved iron loss. - Highlights: • An Fe–6.5 wt.% Si as-cast strip doped with cerium was produced. • A thin warm rolled sheet with limited edge cracks was obtained. • Microstructure and texture evolution at each stage were investigated. • Strong λ-fiber and Goss recrystallization textures were formed. • The magnetic properties of the annealed sheet were significantly improved.},
doi = {10.1016/J.MATCHAR.2015.03.024},
journal = {Materials Characterization},
issn = {1044-5803},
number = ,
volume = 103,
place = {United States},
year = {2015},
month = {5}
}