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Influence of Selected Deoxidizers on Chemical Composition of Molten Inclusions in Liquid Steel

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Abstract

The conditions of nonmetallic inclusions formation by using manganese, silicon, and aluminum deoxidizers in a steel bath (four steel grades) are reviewed in the presented paper. The changes in the chemical composition of nonmetallic inclusions were calculated under thermodynamic equilibrium conditions between liquid steel containing Mn, Si, O, Al and the formed liquid oxide phase, applying a non-commercial (author’s) computer program. The impact of the order of dispensing alloy additions, and the initial manganese content in steel on the final oxygen concentration, as well as the evolution of the chemical composition of nonmetallic inclusions were considered. The acquired results indicate that the proposed calculation procedure can be used to design the desired chemical composition of steel with a controlled value and chemical composition of nonmetallic inclusions.

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Acknowledgments

The research was conducted with the financial support as part of the Project: No. POIR.01.02.00–00-0207/17, title: “Innovative manufacturing process for a very high metallurgical purity steel for the most critical applications in the automotive industry”.

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Authors and Affiliations

  1. AGH-University of Science and Technology, 30 A. Mickiewicza Av., Kraków, Poland

    Dorota Kalisz, Piotr Migas & Mirosław Karbowniczek

  2. COGNOR SA Branch HSJ in Stalowa Wola, Kwiatkowskiego 1, Stalowa Wola, Poland

    Michał Moskal & Andrzej Hornik

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  1. Dorota Kalisz
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  2. Piotr Migas
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  3. Mirosław Karbowniczek
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  4. Michał Moskal
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  5. Andrzej Hornik
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Correspondence to Piotr Migas.

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This article is an invited submission to JMEP selected from presentations at The XXII Physical Metallurgy and Materials Science Conference: Advanced Materials and Technologies (AMT 2019) held June 9-12, 2019, in Bukowina Tatrzanska, Poland, and has been expanded from the original presentation.

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Kalisz, D., Migas, P., Karbowniczek, M. et al. Influence of Selected Deoxidizers on Chemical Composition of Molten Inclusions in Liquid Steel. J. of Materi Eng and Perform 29, 1479–1487 (2020). https://doi.org/10.1007/s11665-019-04493-2

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  • DOI: https://doi.org/10.1007/s11665-019-04493-2

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