Shape memory alloy nanostructures with coupled dynamic thermo-mechanical effects

R. P. Dhote, H. Gomez, R. N.V. Melnik, J. Zu

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Employing the Ginzburg-Landau phase-field theory, a new coupled dynamic thermo-mechanical 3D model has been proposed for modeling the cubic-to-tetragonal martensitic transformations in shape memory alloy (SMA) nanostructures. The stress-induced phase transformations and thermo-mechanical behavior of nanostructured SMAs have been investigated. The mechanical and thermal hysteresis phenomena, local non-uniform phase transformations and corresponding non-uniform temperatures and deformations' distributions are captured successfully using the developed model. The predicted microstructure evolution qualitatively matches with the experimental observations. The developed coupled dynamic model has provided a better understanding of underlying martensitic transformation mechanisms in SMAs, as well as their effect on the thermo-mechanical behavior of nanostructures.

Original languageEnglish
Pages (from-to)48-53
Number of pages6
JournalComputer Physics Communications
Volume192
DOIs
StatePublished - 1 Jul 2015

Keywords

  • Ginzburg-Landau theory
  • Nonlinear thermo-elasticity
  • Phase-field model

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