Irreversible thermodynamics modelling of plastic deformation of metals

Irreversible thermodynamics is employed to describe plastic deformation of metallic single crystals and coarse grained polycrystals. Dislocations are assumed to increase the crystal entropy via processes of dislocation generation, glide and annihilation. It is postulated that the entropy progresses according to the relationship d S/d γ= κ( C/T)d τ/d γ, where S is the entropy of the deformed metal, γ is the shear strain, κ is a scaling factor …