Abrupt Kink Model of Dislocation Motion. III. The Effect of Internal Stresses
- 1 March 1965
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 137 (5A) , A1562-A1572
- https://doi.org/10.1103/physrev.137.a1562
Abstract
The role of internal stresses in determining the internal friction of cold-worked polycrystalline materials is investigated by means of the abrupt kink model of dislocation motion. An internal friction peak is found which has a characteristic relaxation time equal to the recombination lifetime of kinks. This is identified with the less detailed result of the Seeger-Paré mechanism of the Bordoni peak, as found by elementary rate theory. The results of the theory are shown to be capable of explaining all the features of the Bordoni peak. The need for further systematic experiments is emphasized, particular reference being made to means of differentiating between the above mechanism and that based upon the hypothesis of thermally activated kink motion.Keywords
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