On Reconstitutive Phase Transitions, Vacancies and the Jump of the Chemical Potentials

A two-phase segregation model in solids under isothermal conditions is derived where due to plastic effects the number of vacancies changes when crossing a transition layer. The thermodynamical correctness of the model is shown and the existence of weak solutions in suitable spaces is reviewed. By a formal asymptotic analysis the dynamics of the interface and its dependence on the unsymmetric vacancy distribution is studied.