Influence of phase transformation anisotropy on transformation surface around a crack tip

Etienne Patoor (1) , Guillaume Mohara (1) , Dimitris Chatziathanasiou (2) , Yves Chemisky (2) , Georges Chatzigeorgiou (2) , Fodil Meraghni (2)

1 Georgia Tech Lorraine [Metz]
2 LEM3 - Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux

A transformation criterion that includes the effect of tension-compression asymmetry and texture-induced anisotropy is used to describe the size of the transformation region surrounding the tip of an edge crack in a shape memory alloy. This analysis is made within the framework of the linear elastic fracture mechanics (LEFM). Different opening modes are considered. Transformation surfaces obtained are compared with those published by Lexcellent et al. (Int. J. Fract. 169: 1-13, 2011) for the isotropic case to capture the influence of transformation anisotropy for different fracture modes.

Mots clés: shape memory alloys

Domaines: Matériaux et structures en mécanique [physics.class-ph]; Mécanique des matériaux [physics.class-ph]; Mécanique des solides [physics.class-ph]

Etienne Patoor, Guillaume Mohara, Dimitris Chatziathanasiou, Yves Chemisky, Georges Chatzigeorgiou, et al.. Influence of phase transformation anisotropy on transformation surface around a crack tip. 24th International Congress of Theoretical and Applied Mechanics (ICTAM 2016), Aug 2016, Montréal, Canada. ⟨hal-01365346⟩