Eutectic interface configurations during melting View Full Text


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Article Info

DATE

2000-04

AUTHORS

C. A. Norlund, R. Trivedi

ABSTRACT

Experimental studies are presented on the melting of a lamellar eutectic structure in a transparent model alloy system. Steady-state morphologies have been characterized for different dissolution rates. Both coupled and noncoupled melting of eutectic are observed. A diffusive model of coupled eutectic melting has been developed and compared with the experimental results. Because the eutectic spacing is fixed, the system is shown to select the shape so that the average position of the interface for the two phases remains isothermal. A comparison of the predicted shapes with the experimental data shows that the higher melting point phase adjusts its curvature to equate the average temperature of the two phases when the experimental conditions are in the coupled melting regime. The conditions for a coupled melting to be unstable are described for which one of the phases extends further into the liquid. When this extension is significant, a spherodization of the leading phase is observed. More... »

PAGES

1261-1269

References to SciGraph publications

  • 1984-06-01. Interdendritic Spacing: Part I. Experimental Studies in METALLURGICAL AND MATERIALS TRANSACTIONS A
  • 1988-12. Eutectic growth: Selection of interlamellar spacings in METALLURGICAL AND MATERIALS TRANSACTIONS A
  • 1991-10. Eutectic spacing selection in lead-based alloy systems in METALLURGICAL AND MATERIALS TRANSACTIONS A
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/s11661-000-0121-3

    DOI

    http://dx.doi.org/10.1007/s11661-000-0121-3

    DIMENSIONS

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