Table of Contents
ISRN Metallurgy
Volume 2012 (2012), Article ID 612891, 5 pages
http://dx.doi.org/10.5402/2012/612891
Research Article

A Model for Conjoint Shape Memory and Pseudo-Elastic Effects during Martensitic Transformation

Unité de Physique des Dispositifs à Semi-Conducteurs, Faculté des Sciences de Tunis, Tunis El Manar University, 2092 Tunis, Tunisia

Received 9 August 2012; Accepted 30 August 2012

Academic Editors: Y.-D. Wang and Y. Xu

Copyright © 2012 K. Boubaker. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Shape memory alloys (SMA) are metals which can restore their initial shape after having been subjected to a deformation. They exhibit in general both nonlinear shape memory and pseudoelastic effects. In this paper, shape memory alloy (SMA) and its constitutive model with an empirical kinetics equation are investigated. A new formulation to the martensite fraction-dependent Young modulus has been adopted and the plastic deformation was taken into account. To simulate the variations, a one-dimensional constitutive model was constructed based on the uniaxial tension features.