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Evolution of Inclusions in Ti-Bearing Ultra-Low Carbon Steels during RH Refining Process

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Materials Processing Fundamentals

Abstract

Ultra-low carbon steel, in which titanium is used to fix the interstitial atoms such as C and N, is well used for automobile. During the RH refining process, the evolution of oxide inclusions was analyzed using ASPEX and acid extraction. It was found that after Ti addition a large amount of Al-Ti-O inclusions generated, and the Ti content in the oxides decreased as the refining time increased. It was estimated that most of the oxides could be removed before the time of 10 min after Ti addition. The average size of alumina increased while that of Al-Ti-O inclusions decreased during the refining process. After Ti addition, the Al2O3 clusters transformed to coral shape and there existed three types of Al-Ti-O inclusions. Accordingly, a formation mechanism of Al-Ti-O inclusion was proposed.

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Author information

Authors and Affiliations

  1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China

    Wen Yang & Lifeng Zhang

  2. School of Ecological and Metallurgical Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Wen Yang, Shusen Li, Xinhua Wang & Lifeng Zhang

  3. School of Material Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China

    Wen Yang & Xuefeng Liu

  4. Shougang Qian’an Steel Co. Ltd., Qian’an, Hebei, 064400, China

    Shusen Li

  5. Steelmaking Department, SINOSTEEL MECC, Beijing, 100080, China

    Yubin Li

  6. Steelmaking Department, Shougang Jingtang United Iron & Steel Co. Ltd, Tangshan, 063200, China

    Qinglin Shan

Authors
  1. Wen Yang
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  2. Shusen Li
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  3. Yubin Li
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  4. Xinhua Wang
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  5. Lifeng Zhang
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  6. Xuefeng Liu
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  7. Qinglin Shan
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Corresponding author

Correspondence to Lifeng Zhang .

Editor information

Editors and Affiliations

  1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, China

    Lifeng Zhang Ph.D. (professor and the dean, Key Reader (Member of Board of Review) (professor and the dean, Key Reader (Member of Board of Review)

  2. Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA

    Antoine Allanore M.Sc., Ph.D. (Assistant Professor of Metallurgy) (Assistant Professor of Metallurgy)

  3. Saint-Gobain Innovative Materials R&D, USA

    Cong Wang Ph.D., M.S., B.S. (Senior Research Engineer) (Senior Research Engineer)

  4. Materion Brush Beryllium and Composites, Elmore, Ohio, USA

    James A. Yurko Ph.D., B.S.E. (Principal Technologist) (Principal Technologist)

  5. Mississippi State University, Mississippi, USA

    Justin Crapps Ph.D.

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© 2013 TMS (The Minerals, Metals & Materials Society)

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Yang, W. et al. (2013). Evolution of Inclusions in Ti-Bearing Ultra-Low Carbon Steels during RH Refining Process. In: Zhang, L., Allanore, A., Wang, C., Yurko, J.A., Crapps, J. (eds) Materials Processing Fundamentals. Springer, Cham. https://doi.org/10.1007/978-3-319-48197-5_1

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