Phase field method to the interaction of phase transformations and dislocations at the nanoscale

Interaction between martensitic phase transformations (PTs) and dislocations is of great importance for various applications such as transformation-induced plasticity, plastic shear induced PTs under high pressure, martensite nucleation and growth, and heat and thermomechanical treatments of steels. Phase field method (PFM) to the interaction between PTs and dislocations is developed as a nontrivial combination of the most recent advanced PFMs to martensitic PTs and dislocation evolution. Finite element method (FEM) simulations are performed to solve the coupled phase-field and elasticity equations and are applied to study of the growth and arrest of temperature-induced martensitic plate, the evolution of dislocations and high pressure phase in a nanograined material under pressure and shear, and the dislocation inheritance for stress-induced PT.