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Effect of an upward magnetic field on nanosized sulfide precipitation in ultra-low carbon steel

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Abstract

An induction levitation melting (ILM) refining process is performed to remove most microsized inclusions in ultra-low carbon steel (UCS). Nanosized, spheroid shaped sulfide precipitates remain dispersed in the UCS. During the ILM process, the UCS is molten and is rotated under an upward magnetic field. With the addition of Ti additives, the spinning molten steel under the upward magnetic field ejects particles because of resultant centrifugal, floating, and magnetic forces. Magnetic force plays a key role in removing sub-micrometer-sized particles, composed of porous aluminum titanate enwrapping alumina nuclei. Consequently, sulfide precipitates with sizes less than 50 nm remain dispersed in the steel matrix. These findings open a path to the fabrication of clean steel or steel bearing only a nanosized strengthening phase.

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Authors and Affiliations

  1. School of Chemical Engineering, Sichuan University, Chengdu, 610065, China

    Kang-jia Duan, Xi-zhi Yuan, Shan-shan Han & Qing-song Huang

  2. School of Materials Science and Engineering, Chongqing University, Chongqing, 400045, China

    Ling Zhang

  3. Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), P.O. Box 510119, 01314, Dresden, Germany

    Yu Liu

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  1. Kang-jia Duan
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  2. Ling Zhang
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Correspondence to Qing-song Huang.

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Duan, Kj., Zhang, L., Yuan, Xz. et al. Effect of an upward magnetic field on nanosized sulfide precipitation in ultra-low carbon steel. Int J Miner Metall Mater 22, 714–720 (2015). https://doi.org/10.1007/s12613-015-1126-7

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  • DOI: https://doi.org/10.1007/s12613-015-1126-7

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