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Steady state segregation and heat flow in ESR

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Abstract

A combined theoretical and experimental study of steady-state heat flow and segregation in ESR is presented. The segregation model permits prediction of pressure gradients, hence, interdendritic flow velocities responsible for macrosegregation in the “mushy≓ zone of axisymmetric ESR ingots. The heat flow model considers the solidus isotherm as a moving boundary. The relationships between power and slag temperature as well as power and heat transfer coefficient are experimentally measured and included in the heat balance equation for the slag. Experiments on both a low-temperature simulated ESR apparatus and on a 200 mm diam ESR ingot mold verify both models.

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Authors and Affiliations

  1. Depart- ment of Metallurgy and Mining Engineering, University of Illinois, Urbana-Champaign, IL

    S. D. Ridder (Research Assistants) & F. C. Reyes (Research Assistants)

  2. Department of Materials Science and Engineering, Pahlavi University, Shiraz, Iran

    S. Chakravorty (Professor)

  3. Department of Metallurgy and Mining Engineering and Department of Mechanical and Industrial Engineering, University of Illinois, USA

    R. Mehrabian (Associate Professor)

  4. U.S. Steel Corporation, Monroeville, PA

    J. D. Nauman

  5. Cabot Corporation, Kokomo, IN

    J. H. Chen (Group Leader) & H. J. Klein (Research and Development Director)

Authors
  1. S. D. Ridder
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  2. F. C. Reyes
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  3. S. Chakravorty
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  4. R. Mehrabian
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  5. J. D. Nauman
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  6. J. H. Chen
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  7. H. J. Klein
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Additional information

S. CHAKRAVORTY formerly Research Associate, Department of Metallurgy and Mining Engineering, University of Illinois.

J. D. NAUMAN formerly Engineering Associate, Cabot. Corporation

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Ridder, S.D., Reyes, F.C., Chakravorty, S. et al. Steady state segregation and heat flow in ESR. Metall Trans B 9, 415–425 (1978). https://doi.org/10.1007/BF02654416

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  • DOI: https://doi.org/10.1007/BF02654416

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