Thermodynamic Force on a Dislocation
- 1 January 1968
- journal article
- conference paper
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 39 (1) , 137-141
- https://doi.org/10.1063/1.1655719
Abstract
The thermodynamic force on a dislocation is defined as the negative gradient of the Gibbs free energy of the crystal with respect to dislocation motion. This is shown to lead to a consistent force expression which contains two terms: the Peach-Koehler force due to the stress, and the Bardeen-Herring force due to the vacancy concentration. The precise definition of these two terms is arbitrary, though their sum is unique. Various forms of the force expression are derived in terms of different reference vacancy concentrations, including the original forms of Weertman and Lothe and Hirth.This publication has 8 references indexed in Scilit:
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- Discussion of ``Dislocation Climb Forces'' by Lothe and HirthJournal of Applied Physics, 1967
- Dislocation Climb ForcesJournal of Applied Physics, 1967
- The direction of the force on a dislocation and the sign of the Burgers vectorActa Metallurgica, 1965
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