Thermally Assisted Unpinning of a Dislocation Double Loop
- 1 October 1968
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 39 (11) , 5181-5191
- https://doi.org/10.1063/1.1655941
Abstract
The effect of thermal fluctuations on dislocation unpinning is computed for a model case of a crystal containing dislocation double loops. The amplitude‐dependent decrement as a function of strain amplitude, temperature, and frequency is found to have a maximum. The form of the resulting theory is the same as that for the zero‐temperature theory, except that the mechanical breakaway stress of the zero‐point theory has to be replaced by a temperature‐ and frequency‐dependent thermal breakaway stress at finite temperatures.This publication has 5 references indexed in Scilit:
- Entropy Factors for Thermally Activated Unpinning of DislocationsJournal of Applied Physics, 1964
- Theory of the Thermal Breakaway of a Pinned Dislocation Line with Application to Damping PhenomenaJournal of Applied Physics, 1964
- The study of the interaction between point defects and dislocations through internal friction experimentsActa Metallurgica, 1962
- Dislocation damping in metalsAdvances in Physics, 1960
- Theory of Mechanical Damping Due to DislocationsJournal of Applied Physics, 1956