The influence of oscillatory and steady shears on interfacial stability during directional solidification

T. P. Schulze, S. H. Davis*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

A linear stability analysis is performed on the interface formed during the directional solidification of a dilute binary alloy in the presence of a weak, time-dependent flow. In one case, the flow is generated by a simple harmonic, lateral oscillation of the crystal, resulting in solidification into a compressed Stokes boundary layer. In a second, more general, case, the crystal also has a mean horizontal velocity. The presence of the flow can either stabilize or destabilize the two-dimensional system relative to the case with no flow, with the result depending on the Schmidt number, segregation coefficient, and the frequency of the oscillations.

Original languageEnglish (US)
Pages (from-to)317-333
Number of pages17
JournalJournal of Crystal Growth
Volume143
Issue number3-4
DOIs
StatePublished - Oct 2 1994

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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