Stress-induced martensitic transformation in polycrystalline alloys

Modern scale transition methods developed in mechanics of materials these l ast years are successfully applied to model the particular behaviour exhibi ted by shape memory alloys. Starting from a local kinematical analysis base d on crystallographic considerations and determining the thermodynamical fo rce associated to the martensitic phase transformation local relationships are determined using the self-consistent approximation. This framework is a pplied to simulate different loading conditions using mechanical or thermal loading paths with uniaxial or multiaxial conditions. Results such obtaine d are compared with experimental results.