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Possible influence of sulfur content on magnetic aging behaviors of non-oriented electrical steels

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Abstract

Six non-oriented steel sheets of similar grade produced by different steel companies were used to analyze the magnetic aging behaviors after aging at 200°C for 48 h. It was observed that tiny S atoms, besides C and N, could also induce certain increase of core loss during aging. Thermodynamic calculation indicated that the nucleation driving force of FeS is much higher than those of Fe3C and Fe4N at low temperature, while S atoms, which tend to segregated around dislocations and boundaries, would diffuse rapidly along the crystalline defects while FeS particles would form. Therefore, higher content of tiny S atoms could increase core loss during service time of non-oriented steel sheets.

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Authors and Affiliations

  1. Department of Materials, State Key Laboratory of Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, 100083, China

    Wei-Min Mao, Ping Yang & Chang-Rong Li

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  1. Wei-Min Mao
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  2. Ping Yang
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  3. Chang-Rong Li
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Correspondence to Wei-Min Mao.

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Mao, WM., Yang, P. & Li, CR. Possible influence of sulfur content on magnetic aging behaviors of non-oriented electrical steels. Front. Mater. Sci. 7, 413–416 (2013). https://doi.org/10.1007/s11706-013-0219-3

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