COUPLED BUOYANCY/MORPHOLOGICAL INSTABILITY IN SYSTEMS WITH SMALL SEGREGATION COEFFICIENT.

G. W. Young*, S. H. Davis

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The authors derive an evolution equation governing the cellular structure of a binary alloy having small segregation coefficient. This equation, applicable to long-wave instabilities of a planar interface, incorporates coupled morphological instabilities and buoyancy effects. The presence of buoyancy can inhibit the onset of the cellular structure by effectively magnifying the segregation and diffusion. Further, the authors discuss the preferred directions for cellular growth.

Original languageEnglish (US)
Title of host publicationProceedings of the U.S. National Congress of Applied Mechanics
EditorsJ.Parker Lamb
PublisherASME
Pages237-248
Number of pages12
StatePublished - Dec 1 1986

ASJC Scopus subject areas

  • Engineering(all)

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