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 temperature 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.
@article{arxiv.1403.6133,
title = {Shape Memory Alloy Nanostructures With Coupled Dynamic Thermo-Mechanical Effects},
author = {R. Dhote and H. Gomez and R. Melnik and J. Zu},
journal= {arXiv preprint arXiv:1403.6133},
year = {2015}
}