The Activation Energy of Dislocation Movement
Author:
- 1 January 1965
- journal article
- research article
- Published by Wiley in Physica Status Solidi (b)
- Vol. 8 (2) , 499-507
Abstract
An analysis is made of the thermodynamic quantities which enter into the rate equation for a dislocation moving by thermal activation under external and internal stresses. It is pointed out that the literature contains a number of erroneous statements mainly due to incorrect interpretations of the thermodynamic quantities. It is shown that a determination of the “activation energy” ΔG from experimental parameters can be made via a formula given by Conrad and Wiedersich although their derivation is also incorrect. The analysis shows that for a dislocation overcoming localized obstacles back fluctuations are generally negligible.Keywords
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