Cubic to tetragonal martensitic transformation in a thin film elastically constrained by a substrate

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 mixe...

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Bibliographic Details
Published inMetals and materials international Vol. 9; no. 3; pp. 221 - 226
Main Authors Seol, D. J., Hu, S. Y., Li, Y. L., Chen, L. Q., Oh, K. H.
Format Journal Article
LanguageEnglish
Published Seoul Springer Nature B.V 01.06.2003
Subjects
Alloy systems
Alloys
Boundary conditions
Constraints
Domains
Ferrous alloys
Martensite
Martensitic transformations
Mathematical models
Metallurgy
Nucleation
Phase transitions
Strain
Strain energy
Substrates
Supercooling
Thin films
Three dimensional models
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ISSN1598-9623
2005-4149
DOI10.1007/BF03027039

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Summary: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.
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ISSN:1598-9623
2005-4149
DOI:10.1007/BF03027039