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Temperature Dependent Viscous Drag in Close-packed Metals

Vreeland, T., Jr. and Jassby, K. M. (1971) Temperature Dependent Viscous Drag in Close-packed Metals. Materials Science and Engineering, 7 (2). pp. 95-102. ISSN 0025-5416. doi:10.1016/0025-5416(71)90029-2.

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The influence of viscous drag on dislocation motion in close-packed metals is examined. Three experimental measurements of the viscous drag are discussed, i.e. internal friction, strain rate versus stress, and stress-time-displacement measurements. Experimental results of each of these methods are compared. Theories of dislocation-phonon and dislocation-electron interactions leading to viscous drag are briefly described. The experimentally-determined dislocation drag coefficient is qualitatively in agreement with the predictions of damping through dislocation-phonon interactions. It is concluded that additional theoretical work is needed for a quantitative comparison of theory and experiment. Additional experimental work to determine the temperature dependence of the drag coefficient below 66°K is needed to resolve discrepancies in different theories of the dislocation-electron interaction.

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Additional Information:© 1971 Published by Elsevier B.V. Received August 10, 1970. This work was sponsored by the U. S. Atomic Energy Commission and the Division of Engineering and Applied Science, California Institute of Technology. CALT-767-P3-12.
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Atomic Energy CommissionUNSPECIFIED
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Issue or Number:2
Record Number:CaltechAUTHORS:20150121-081207028
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Official Citation:T Vreeland Jr., K.M Jassby, Temperature dependent viscous drag in close-packed metals, Materials Science and Engineering, Volume 7, Issue 2, February 1971, Pages 95-102, ISSN 0025-5416, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:53918
Deposited By: Tony Diaz
Deposited On:21 Jan 2015 23:33
Last Modified:10 Nov 2021 20:24

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