Coarsening With Low Pèclet Number Convective Transport Due to Sedimentation

John Thompson, Peter W Voorhees*

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Coarsening occurs in virtually all multiphase materials. Simulations of coarsening that employ a solution to the multiparticle diffusion problem provide accurate predictions of the coarsening process at low volume fractions of coarsening phase. However, during coarsening in systems where the matrix is a liquid, it is possible for the particles to sediment due to a density difference between the solid and liquid. We have modified a treatment of multiparticle diffusion to include the effects of slowly moving particles on the coarsening process, specifically the limit of very low Pèclet number where the diffusion still controls the ripening process. The model shows an excellent agreement with coarsening experiments in which the particles experience low Pèclet number convection introduced by sedimentation.

Original languageEnglish (US)
Pages (from-to)2714-2719
Number of pages6
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume48
Issue number6
DOIs
StatePublished - Jun 1 2017

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ASJC Scopus subject areas

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

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