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Diversified Aggregated Patterns of Alumina Inclusions in High-Al Iron Melt

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Abstract

High-concentration Al deoxidation resulting in diversified aggregated patterns of alumina inclusions in high-Al iron melt were observed, especially, a new alumina agglomerate with a ring shape was reported and discussed in the current work. A large number of small alumina particle originated from the explosive nucleation of alumina in Fe-Al-O reaction zone with high-concentration Al in a short time is the critical condition for forming the alumina-agglomerated ring. To understand the stabilities of the ring, the relationships among the liquid capillary force, the equivalent inner radius of ring, the filling angle, and the separation distance h were quantitatively investigated based on a mathematical model and experimental results. The new phenomenon and formation mechanism of alumina-agglomerated ring could be important to high-Al steel metallurgy.

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Acknowledgments

The authors gratefully express their appreciation to National Natural Science Foundation of China (51874170), National Natural Science Foundation of China (51634004, 51974155), for supporting this work.

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Authors and Affiliations

  1. School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan, 114051, Liaoning, P.R. China

    Guocheng Wang, Yang Zhao, Yuanyou Xiao, Pengliang Jin & Shengli Li

  2. Key Laboratory of Chemical Metallurgy Engineering Liaoning Province, University of Science and Technology Liaoning, Anshan, 114051, Liaoning, P.R. China

    Guocheng Wang & Yuanyou Xiao

  3. Department of Metallurgical and Materials Engineering, Colorado School of Mines, Golden, CO, 80401, USA

    Seetharaman Sridhar

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  1. Guocheng Wang
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  2. Yang Zhao
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  4. Pengliang Jin
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  5. Shengli Li
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Correspondence to Guocheng Wang.

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Manuscript submitted May 5, 2020; accepted September 10, 2020.

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Wang, G., Zhao, Y., Xiao, Y. et al. Diversified Aggregated Patterns of Alumina Inclusions in High-Al Iron Melt. Metall Mater Trans B 51, 3051–3066 (2020). https://doi.org/10.1007/s11663-020-01978-7

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  • DOI: https://doi.org/10.1007/s11663-020-01978-7

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