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Convection-induced distortion of a solid-liquid interface

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Abstract

Measurements of convective flow fields and solid-liquid interface shapes during the solidification of a pure and a slightly alloyed transparent material reveal that the convective transport of solute can cause a macroscopic depresssion to develop in the solid-liquid interface. This effect occurs under conditions close to those which are predicted to produce morphological instability of a planar interface. A cellular or dendritic microstructure later develops within the interface depression. The convection is attributed to the effect of radial temperature gradients in the crystal growth apparatus.

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Authors and Affiliations

  1. Metallurgy Division, National Bureau of Standards, 20899, Gaithersburg, MD

    R. J. Schaefer & S. R. Coriell

Authors
  1. R. J. Schaefer
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  2. S. R. Coriell
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Additional information

This paper is based on a presentation made at the symposium “Fluid Flow at Solid-Liquid Interfaces” held at the fall meeting of the TMS-AIME in Philadelphia, PA on October 5, 1983 under the TMS-AIME Solidification Committee.

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Schaefer, R.J., Coriell, S.R. Convection-induced distortion of a solid-liquid interface. Metall Trans A 15, 2109–2115 (1984). https://doi.org/10.1007/BF02647093

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  • DOI: https://doi.org/10.1007/BF02647093

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