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Effect of Ce Treatment on the Composition of Nucleation Inclusion in Ti–Mg Complex Deoxidized C–Mn Steel

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10th International Symposium on High-Temperature Metallurgical Processing

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

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Abstract

FactSage software and SEM + EDS were introduced to determine the composition of nucleation inclusion in Ce-treated Ti–Mg deoxidized C–Mn steel with Ce content ranging from 0 to 0.036 wt%. The nucleation mechanism of inclusion in tested steels was investigated simultaneously. The experimental results showed that the composition of inclusion in the Ti–Mg complex deoxidized steel changed from MgO + MgAl2O4/MgTi2O4 + MnS to MgO + MgAl2O4/MgTi2O4 + CeAlO3/Ce2O2S + MnS after Ce treatment , while there was no significant change in the content of Ti(C, N). The mass fraction of Ce2O2S was markedly increased with the increase of Ce. The addition of Ce enhanced the probability of nucleation of acicular ferrite on inclusion . The nucleation mechanism of acicular ferrite induced by inclusion containing Ce was manganese-depleted zone (MDZ) based on the line scanning results and the low lattice mismatch between Ce2O2S and ɑ-Fe.

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Acknowledgements

The authors would like to gratefully acknowledge the financial support from the National Nature Science Foundation of China (No. 51774024).

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Authors and Affiliations

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

    Zhen Liu, Bo Song, Longfei Li, Zeyun Cai & Xiaokang Cui

Authors
  1. Zhen Liu
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  2. Bo Song
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  3. Longfei Li
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  4. Zeyun Cai
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  5. Xiaokang Cui
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Corresponding author

Correspondence to Bo Song .

Editor information

Editors and Affiliations

  1. Central South University, Changsha, China

    Tao Jiang

  2. Michigan Technological University, Houghton, MI, USA

    Jiann-Yang Hwang

  3. RHI Magnesita, Leoben, Austria

    Dean Gregurek

  4. Central South University, Changsha, China

    Zhiwei Peng

  5. Montana Tech, Butte, MT, USA

    Jerome P. Downey

  6. The University of Queensland, Brisbane, QLD, Australia

    Baojun Zhao

  7. Istanbul Technical University, Istanbul, Turkey

    Onuralp Yücel

  8. Atilim University, Ankara, Turkey

    Ender Keskinkilic

  9. University of Concepción, Concepción, Chile

    Rafael Padilla

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Liu, Z., Song, B., Li, L., Cai, Z., Cui, X. (2019). Effect of Ce Treatment on the Composition of Nucleation Inclusion in Ti–Mg Complex Deoxidized C–Mn Steel. In: Jiang, T., et al. 10th International Symposium on High-Temperature Metallurgical Processing. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05955-2_39

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