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Coarsening With Low Pèclet Number Convective Transport Due to Sedimentation

  • Symposium: PTM 2015: Solid-Solid Phase Transformations in Inorganic Materials
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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.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, Northwestern University, Evanston, IL, 60093, USA

    John Thompson & Peter W. Voorhees

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  1. John Thompson
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  2. Peter W. Voorhees
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Correspondence to Peter W. Voorhees.

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Manuscript submitted March 28, 2016.

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Thompson, J., Voorhees, P.W. Coarsening With Low Pèclet Number Convective Transport Due to Sedimentation. Metall Mater Trans A 48, 2714–2719 (2017). https://doi.org/10.1007/s11661-017-3959-3

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  • DOI: https://doi.org/10.1007/s11661-017-3959-3

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