Modelling Dynamic Recovery and Recrystallization of Metals by a New Non-Equilibrium Thermodynamics Approach

摘要

A non-equilibrium thermodynamics-based approach is proposed to predict the dislocation density and flow stress at the steady state of high temperature deformation. For a material undergoing dynamic recovery and recrystallization, it is found that the total dislocation density can be expressed as rho = (gamma epsilon/b)~2 , where epsilon is the strain rate, b is the magnitude of the Burgers vector and gamma is a dynamic recovery and recrystallization related parameter.