Strain-induced phase transition in martensitic alloys: Phase-field simulation

Abstract

Besides stress- and thermal-induced phase transition, strain can also be used to induce the structural transformation in martensitic alloy. Phase-field method was performed to simulate the nucleation and growth of martensite under the strain. During the martensitic transformation (MT) under the deformation, Md as a specific point represents the maximum temperature of stress- or strain- induced phase transition, which was confirmed by using Phase-field simulation in our work. The simulated results showed that the normal strain and the shear strain can induce MT between Ms and Md. The critical normal strain and the critical shear strain related to the temperature were calculated and compared. The mechanism of strain-induced MT was discussed and compared with that of thermal-induced MT at last.