Observation of the two-way shape memory effect in an atomistic model of martensitic transformation

  • Eduardo Jagla Comisión Nacional de Energía Atómica, Instituto Balseiro (UNCu), and CONICET. Centro Atómico Bariloche, (8400) Bariloche, Argentina.
Keywords: Martensitic transformation, Shape memory effect, Numerical simulations

Abstract

We study a system of classical particles in two dimensions interacting through an isotropic pair potential that displays a martensitic phase transition between a triangular and a rhomboidal structure upon the change of a single parameter. Previously it was shown that this potential is able to reproduce the shape memory effect and super-elasticity, among other well known features of the phenomenology of martensites. Here we extend those previous studies and describe the development of the more subtle two-way shape memory effect. We show that in a poly-crystalline sample, the effect is mostly due to the existence of retained martensite within the austenite phase. We also study the case of a single crystal sample where the effect is associated to particular orientations of the dislocations, either induced by training or by an ad hoc construction of a starting sample.

Received: 16 January 2017,  Accepted: 23 March 2017; Edited by: L. Viña ; Reviewed by: J. Pons, Universitat de les Illes Balears, Palma  de Mallorca, Spain; DOI: http://dx.doi.org/10.4279/PIP.090004

Cite as: E. A. Jagla, Papers in Physics 9, 090004 (2017)

This paper, by E. A Jagla, is licensed under the Creative Commons Attribution License 3.0.

 

Open Review
Published
2017-05-01
How to Cite
Jagla, E. (2017). Observation of the two-way shape memory effect in an atomistic model of martensitic transformation. Papers in Physics, 9, 090004. https://doi.org/10.4279/pip.090004
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Articles