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Numerical Modeling of the Macrosegregation Improvement in Continuous Casting Blooms by Using F-EMS

  • Solidification Behavior in the Presence of External Fields
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Abstract

A three-dimensional mathematic model based on segmentation that joins the electromagnetic field, melt flow, heat transfer, solidification and solute transport in the whole casting domain has been established to study the solute transport at the final stage of solidification in a bloom continuous casting process. The effects of the final electromagnetic stirring (F-EMS) positions on the macrosegregation degree of the as-cast bloom are compared and analyzed. The results show that the maximum carbon segregation degree, the ratio of the local carbon concentration to the initial carbon concentration, is reduced from 1.292 to 1.254 with the application of F-EMS. In addition, the position of F-EMS is also an important factor. The maximum carbon segregation degrees are 1.254, 1.237 and 1.269 when the installation location of F-EMS is 14 m, 16 m and 18 m away from the meniscus, respectively. The optimal center solid fraction is about 0.1 at the F-EMS center for this study.

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Acknowledgement

The first author Shaoxiang Li thanks the National Science and Technology Major Project of China under Grant Number 2019ZX04029001 as his further study after receiving the PhD is partially financed by this Project. The authors are also grateful to Yuqi Zhang from Beijing Forestry University for editing.

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Authors and Affiliations

  1. School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China

    Shaoxiang Li & Zhiqiang Han

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

    Jiaquan Zhang

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  1. Shaoxiang Li
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  2. Zhiqiang Han
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Correspondence to Zhiqiang Han.

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Li, S., Han, Z. & Zhang, J. Numerical Modeling of the Macrosegregation Improvement in Continuous Casting Blooms by Using F-EMS. JOM 72, 4117–4126 (2020). https://doi.org/10.1007/s11837-020-04363-6

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  • DOI: https://doi.org/10.1007/s11837-020-04363-6

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