Nb微合金化对取向硅钢常化板中析出物特征及组织和织构的影响

doi:10.11896/cldb.20110126

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Abstract Grain oriented silicon steels are widely used as the core materials for transformers due to the high magnetic permeability and low core loss, which are charactered by the sharp Goss texture obtained by secondary recrystallization annealing. In order to reduce the slab reheating temperature, niobium is added into grain oriented silicon steel. In this study, four normalized bands of grain-oriented silicon steels with different Nb content (0wt%—0.025 0wt%) were prepared, a detailed study of the precipitates, microstructure, and texture in normalized bands were carried out by various analysis methods. The results show that the precipitates in normalized bands (Nb-free steel) are MnS and composite precipitates of MnS and AlN. Nb is mainly precipitated in the form of Nb(C,N). And the main precipitates in normalized bands (Nb-bearing steel) are composite precipitates of MnS, AlN and Nb(C,N). Due to the strong inhibition effect of Nb(C,N), finer microstructure is obtained in steel with 0.009 0%. However, the effect of Nb addition on microstructure is not obvious when the content is higher than 0.009 0%. And the main textures in normalized bands are {001}〈110〉 and {110}〈001〉, the effect of Nb content on texture is not obvious.

Key words： Nb grain oriented silicon steel precipitates microstructure texture

Published: Online: 2022-04-07

CLC number:

TG142.7

Fund:National Natural Science Foundation of China (51674180).

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	Articles by authors
	WANG Yong
	LI Guangqiang
	LIU Yulong
	GAO Yang
	GUO Xiaolong
	ZHU Chengyi

Cite this article:

WANG Yong,LI Guangqiang,LIU Yulong, et al. Effect of Nb Microalloying on Precipitates, Microstructure and Texture of Normalized Bands of Grain Oriented Silicon Steel[J]. Materials Reports, 2022, 36(7): 20110126-6.

URL:

http://www.mater-rep.com/EN/10.11896/cldb.20110126 OR http://www.mater-rep.com/EN/Y2022/V36/I7/20110126

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