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Characteristics of Secondary Oxide Inclusions in Si-Killed Spring Steel Bloom

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Abstract

In Si-killed spring steel SAE9254 bloom, an increase in secondary dendrite arm spacing corresponded with a larger size of secondary oxide inclusions, while the maximum diameter of secondary inclusions near the bloom surface was less than 3 μm. The presence of CaO was still detectable in the majority of secondary inclusions. Secondary inclusions located at the eutectic zone of tridymite, anorthite, and mullite showed homogeneous glassy morphology and were frequently accompanied by MnS phase precipitation.

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Acknowledgments

This work was financially supported by the National Natural Science Foundation of China (No. 52274341), the Hubei Provincial Natural Science Foundation (No. 2019CFB697), and the State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology.

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On behalf of all authors, the corresponding author states that there is no conflict of interest.

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Authors and Affiliations

  1. The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan, 430081, P.R. China

    Yaoqing Meng, Jianli Li & Qi Xu

  2. Key Laboratory for Ferrous Metallurgy and Resources Utilization of Ministry of Education, Wuhan University of Science and Technology, Wuhan, 430081, P.R. China

    Jianli Li

  3. Steelmaking Factory of Zenith Steel Group Co., Ltd., Changzhou, 213000, P.R. China

    Kunpeng Wang

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  1. Yaoqing Meng
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  2. Jianli Li
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Correspondence to Jianli Li.

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Meng, Y., Li, J., Xu, Q. et al. Characteristics of Secondary Oxide Inclusions in Si-Killed Spring Steel Bloom. Metall Mater Trans B 54, 1639–1645 (2023). https://doi.org/10.1007/s11663-023-02835-z

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  • DOI: https://doi.org/10.1007/s11663-023-02835-z

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