Using kinetic Monte Carlo simulations to study phase separation in alloys

Richard Weinkamer, Peter Fratzl, Himadri S. Gupta, Oliver Penrose, Joel L. Lebowitz

Research output: Contribution to journalReview articlepeer-review

23 Scopus citations

Abstract

We review recent extensions of the kinetic Ising model used to investigate phase separation in binary alloys. Firstly, vacancies are included to model the diffusion of the atoms on the microscopic scale more realistically. These can change the coarsening rate and the coarsening mechanism. Secondly, the lattice is allowed to deform owing to the different sizes of the atoms and the resulting misfit between precipitates and matrix. The deformability of the lattice induces long-range elastic interactions between the atoms. These change the shape, orientation, and arrangement of the precipitates. The growth of the precipitates need not follow the R(t) α t1/3 law.

Original languageEnglish (US)
Pages (from-to)433-456
Number of pages24
JournalPhase Transitions
Volume77
Issue number5-7
DOIs
StatePublished - May 1 2004

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Materials Science(all)

Keywords

  • Elastic interactions
  • Kinetic Ising model
  • Monte Carlo simulation
  • Phase separation
  • Rafting
  • Vacancy

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