Three-Dimensional Phase-Field Modeling of Spinodal Decomposition in Constrained Films

D. J. Seol, S. Y. Hu, Y. L. Li, J. Shen, K. H. Oh, L. Q. Chen

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

The morphological evolution during spinodal decomposition in binary alloy thin films elastically constrained by substrates is studied. Elastic solutions, derived for both elastically isotropic and anisotropic thin films subject to mixed stress-free and constraint boundary conditions, are employed in a three-dimensional phase-field model to investigate the effect of coherency strain and substrate constraint on microstructural evolution. The temporal evolution of the Cahn-Hilliard equation under thin film boundary conditions is solved with a semi-implicit Fourier-spectral method. The phase separation with coherency strain in an elastically anisotropic film shows the behavior of surface-directed spinodal decomposition driven by the elastic energy effect. Negative elastic anisotropy in the cubic alloy causes the alignment of the phases along 〈100〉 elastically soft directions.

Original languageEnglish (US)
Pages (from-to)61-66
Number of pages6
JournalMetals and Materials International
Volume9
Issue number1
DOIs
StatePublished - Feb 2003

    Fingerprint

All Science Journal Classification (ASJC) codes

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

Cite this