Thermodynamic theory of dislocation-enabled plasticity
arXiv:1707.05355 · doi:10.1103/PhysRevE.96.053005
Abstract
The thermodynamic theory of dislocation-enabled plasticity is based on two unconventional hypotheses. The first of these is that a system of dislocations, driven by external forces and irreversibly exchanging heat with its environment, must be characterized by a thermodynamically defined effective temperature that is not the same as the ordinary temperature. The second hypothesis is that the overwhelmingly dominant mechanism controlling plastic deformation is thermally activated depinning of entangled pairs of dislocations. This paper consists of a systematic reformulation of this theory followed by examples of its use in analyses of experimentally observed phenomena including strain hardening, grain-size (Hall-Petch) effects, yielding transitions, and adiabatic shear banding.
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Cited by in corpus (10)
- Thermodynamic theory of dislocation/grain boundary interaction
- Statistical Thermodynamics of Crystal Plasticity
- Scaling Confirmation of the Thermodynamic Dislocation Theory
- Nonequilibrium chemical short-range order in metallic alloys
- A nucleation theory for yielding of nearly defect-free crystals: understanding rate dependent yield points
- Statistical Thermodynamics of Dislocations in Solids
- Thermodynamic analysis of the Livermore molecular-dynamics simulations of dislocation-mediated plasticity
- Brittle-Ductile Transitions in a Metallic Glass
- Fracture Toughness of Crystalline Solids
- Dislocation impediment by the grain boundaries in polycrystals