Cubic to Tetragonal Martensitic Transformation in a Thin Film Elastically Constrained by a Substrate

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

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Abstract

A 3-dimensional phase-field model is developed to describe the cubic to tetragonal martensitic phase transformation in a thin film attached to a substrate. Elasticity solutions are derived for both elastically anisotropic and isotropic thin films with arbitrary domain structures, subject to the mixed boundary conditions for stress-free and constrained states. The model is applied to an Fe-31%Ni alloy system. The nucleation process as well as the final domain structure strongly depends on the substrate constraint. At a smaller undercooling, the increased strain energy effect results in a lower volume fraction of martensite, a finer domain structure and a longer nucleation period.

Original languageEnglish (US)
Pages (from-to)221-226
Number of pages6
JournalMetals and Materials International
Volume9
Issue number3
DOIs
StatePublished - Jun 2003

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All Science Journal Classification (ASJC) codes

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

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