Pseudo elastic behavior is connected with stress-induced deformation leading to tension generation while loading and posterior reformation during a high-temperature phase. As a whole, the process itself consists in large deformation at high temperature and shape recovery when the pressure is eliminated (Ladouglas13). If looking this process in detail, it consists of several complicated process starting from austenite phase triggering the martensic transformation. The stressed induced deformation is succeeded by the development of inelastic strains proceeding to the stress level where the loading path encounters the end-phase transformation (Lagoudlas 13). Upon the transformation completion, one can observe that there is an evident increase of slope between the strains. Revert process begins with the unloading the path returning to the austenite stage and the recovery of shape.
It is also worth saying that the consequences of transformation can expose the shapes memory effect, which is disclosed super-elastic behavior and rubber-like behavior, different stages of yielding and diverse phase diagram (Hane and Shield 3901). However, the study of different shape memory materials has proved that a certain phase choice is valid for specific types of crystal polymers.
