Nucleation and polycrystalline solidification in binary phase field theory

L. Gránásy, T. Pusztai, T. Börzsönyi, J. A. Warren, B. Kvamme, P. F. James

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Abstract

We present a phase field theory for the nucleation and growth of one and two phase crystals solidifying with different crystallographic orientations in binary alloys. The accuracy of the model is tested for crystal nucleation in single component systems. It is shown that without adjustable parameters the height of the nucleation barrier is predicted with reasonable accuracy. The kinetics of primary solidification is investigated as a function of model parameters under equiaxial conditions. Finally, we study the formation of polycrystalline growth morphologies (disordered dendrites, spherulites and fractal-like aggregates).

Original languageEnglish
Pages (from-to)107-115
Number of pages9
JournalPhysics and Chemistry of Glasses
Volume45
Issue number2
Publication statusPublished - Apr 2004

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ASJC Scopus subject areas

  • Ceramics and Composites
  • Physical and Theoretical Chemistry

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