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Eutectic growth under rapid solidification conditions

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Abstract

The model for rapid solidification of eutectics developed recently by the authors is extended: (1) the effect of the localization of the diffusion field which leads to a complex series solution is described by an approximation which makes the prediction of eutectic microstructures a simple matter and (2) the loss of local equilibrium at the solid-liquid interface is taken into account through a growth rate-dependent effective liquidus slope and solute distribution coefficient, leading to a depression of the eutectic temperature and a substantial increase in the solute content of the eutectic phases at growth rates larger than some centimeters per second. The importance of high growth rate effect is demonstrated for a linearized phase diagram.

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Authors and Affiliations

  1. Department of Materials Engineering, Swiss Federal Institute of Technology, CH-1015, Lausanne, Switzerland

    W. Kurz (Professor and Head)

  2. Department of Materials Science and Engineering, Iowa State University, 50011, Ames, IA

    R. Trivedi (Anson Marston Distinguished Professor in Engineering, Senior Scientist)

  3. Ames Laboratory of the U.S. Department of Energy, Iowa State University, 50011, Ames, IA

    R. Trivedi (Anson Marston Distinguished Professor in Engineering, Senior Scientist)

Authors
  1. W. Kurz
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  2. R. Trivedi
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Kurz, W., Trivedi, R. Eutectic growth under rapid solidification conditions. Metall Trans A 22, 3051–3057 (1991). https://doi.org/10.1007/BF02650266

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  • DOI: https://doi.org/10.1007/BF02650266

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