Effect of Boron Content on the Microstructure and Magnetic Properties of Non-oriented Electrical Ste

• 作 者: 万勇 CHEN Weiqing
• 机 构: State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing,School of
• 出 处: Journal of Wuhan University of Technology(Materials Science
• 发表日期: 2015年03期
• 关键词: boron texture annealing favorable predominantly inclusion sharply steels suddenl

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.

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. 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 develop ment of optimum grain size and favorable texture.