Texture evolution and the role of grain boundaries in skeletal formation during coarsening in solid-liquid mixtures

T. L. Wolfsdorf-Brenner*, P. W. Voorhees, J. Sutliff

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

During coarsening of high-volume-fraction solid-liquid mixtures, a solid skeleton is formed. Electron back-scattered diffraction (EBSD) analysis of Sn particles in a liquid Pb-Sn eutectic is employed to yield quantitative evidence for the mechanisms that are operative during skeletal formation. We find that the grain boundaries (GBs) play a substantial role in setting the skeletal structure; however, they do not alter the mechanisms for skeletal coarsening. Particles do not rotate into low-energy configurations to minimize the GB energy in the solid-liquid mixture. Thus, there is no particle rotation-induced coalescence. We find that coalescence is not prevalent; Ostwald ripening is the primary mechanism for coarsening in this system. Our data suggest a model for skeletal formation and the origin of the skeletal stability. This model indicates that the primary factor in determining skeletal stability is the number of GB contacts. We recommend two methods to tailor the number of GBs and to engineer the properties of these solid-liquid mixtures.

Original languageEnglish (US)
Pages (from-to)1955-1969
Number of pages15
JournalUnknown Journal
Volume30
Issue number8
DOIs
StatePublished - 1999

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Metals and Alloys

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