Modelling of hot deformation for microstructural control

Abstract

An understanding of the constitutive behavior of the material is essential for the optimization of the intrinsic workability and control of microstructural evolution during hot working. In recent years, modeling techniques have been developed for this purpose including: the kinetic model; the atomistic model; the dynamic materials model; and other models including activation energy maps with stability criteria and polar reciprocity model. The dynamic materials model is ideal for modeling hot deformation for microstructural control. The model forms a bridge between the continuum mechanics and the microstructural mechanisms occurring during hot working deformation, and consists of principles of irreversible thermodynamics of large plastic flow.