Effect of Boron Content on the Microstructure and Magnetic Properties of Non-oriented Electrical Steels
来源期刊:Journal Of Wuhan University Of Technology Materials Science Edition2015年第3期
论文作者:万勇 CHEN Weiqing
文章页码:574 - 579
摘 要:The effects of boron content in the range of 0-0.0082 wt%, on the inclusion type, microstructure, texture and magnetic properties of non-oriented electrical steels have been studied. After fi nal annealing, the addition of excess boron(w(Bt)>0.004 1 wt%) led to the formation of Fe2 B particles. As boron content increased, grain size increased and reached a maximum in steel with 0.004 1 wt% boron. Furthermore, steel containing 0.004 1 wt% boron had the strongest {100} fi ber texture, Goss texture and the weakest {111} fi ber texture among the fi ve tested steels. Flux density fi rstly rapidly increased and then suddenly decreased with increasing boron content and reached a maximum in steel with 0.004 1 wt% boron. Conversely, core loss fi rst sharply decreased and then abruptly increased with the increase of boron content and reached a minimum in steel containing 0.004 1 wt% boron. Steel containing 0.004 1 wt% boron obtained the best magnetic properties, predominantly through the development of optimum grain size and favorable texture.
万勇1,2,CHEN Weiqing1
1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing2. School of Metallurgical Engineering, Anhui University of Technology
摘 要:The effects of boron content in the range of 0-0.0082 wt%, on the inclusion type, microstructure, texture and magnetic properties of non-oriented electrical steels have been studied. After fi nal annealing, the addition of excess boron(w(Bt)>0.004 1 wt%) led to the formation of Fe2 B particles. As boron content increased, grain size increased and reached a maximum in steel with 0.004 1 wt% boron. Furthermore, steel containing 0.004 1 wt% boron had the strongest {100} fi ber texture, Goss texture and the weakest {111} fi ber texture among the fi ve tested steels. Flux density fi rstly rapidly increased and then suddenly decreased with increasing boron content and reached a maximum in steel with 0.004 1 wt% boron. Conversely, core loss fi rst sharply decreased and then abruptly increased with the increase of boron content and reached a minimum in steel containing 0.004 1 wt% boron. Steel containing 0.004 1 wt% boron obtained the best magnetic properties, predominantly through the development of optimum grain size and favorable texture.
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