The effect of volume change during directional solidification of binary alloys

J. C. Heinrich, D. R. Poirier

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

The effect of solidification contraction is examined through numerical simulations of hypoeutectic Pb-Sn alloys. In addition, particular attention is given to numerically approximating the solidification of the eutectic liquid. In order to predict the inverse segregation at the cooled surface accurately, the contribution of the boundary integral is retained in the weak formulation of the solute conservation equation. This procedure eliminates the false flux, which incorrectly causes a negative segregation at the cooled surface. In the case of vertical solidification under gravity, when channels form, the shrinkage turns the flow inside the channel downwards and towards the solidifying eutectic. Without including shrinkage, the flow in an entire channel is upwards.

Original languageEnglish (US)
Pages (from-to)881-899
Number of pages19
JournalModelling and Simulation in Materials Science and Engineering
Volume12
Issue number5
DOIs
StatePublished - Sep 1 2004

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ASJC Scopus subject areas

  • Modeling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Computer Science Applications

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