Thermodynamic theory of dislocation-enabled plasticity
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.
- Authors:
-
- Univ. of California, Santa Barbara, CA (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1412038
- Alternate Identifier(s):
- OSTI ID: 1410723
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review E
- Additional Journal Information:
- Journal Volume: 96; Journal Issue: 5; Journal ID: ISSN 2470-0045
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
Langer, J. S. Thermodynamic theory of dislocation-enabled plasticity. United States: N. p., 2017.
Web. doi:10.1103/PhysRevE.96.053005.
Langer, J. S. Thermodynamic theory of dislocation-enabled plasticity. United States. https://doi.org/10.1103/PhysRevE.96.053005
Langer, J. S. Thu .
"Thermodynamic theory of dislocation-enabled plasticity". United States. https://doi.org/10.1103/PhysRevE.96.053005. https://www.osti.gov/servlets/purl/1412038.
@article{osti_1412038,
title = {Thermodynamic theory of dislocation-enabled plasticity},
author = {Langer, J. S.},
abstractNote = {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.},
doi = {10.1103/PhysRevE.96.053005},
journal = {Physical Review E},
number = 5,
volume = 96,
place = {United States},
year = {Thu Nov 30 00:00:00 EST 2017},
month = {Thu Nov 30 00:00:00 EST 2017}
}
Web of Science
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Works referencing / citing this record:
Statistical Thermodynamics of Crystal Plasticity
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