DefinePK

Abstract

The article suggests a modeling method and shows relations of state of a polycrystalline body under severe plastic deformation in temperature range outside the sphere of phase transformations, where the body constitutes heterogeneous medium created by two interacting components - continual medium and grain boundaries structure imbedded into this medium. Evolution of grain boundaries, temperature and internal energy connected with changes of stress-strain state inside of and at grain boundaries are regarded from the point of view of regulations of thermodynamics of irreversible processes.