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An Analysis of the Cottrell‐Stokes Law
Author(s) -
Evans K. R.,
Flanagan W. F.
Publication year - 1967
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19670220123
Subject(s) - dislocation , stokes' law , statistical physics , law , obstacle , classical mechanics , mechanics , physics , condensed matter physics , stokes flow , political science , flow (mathematics)
Abstract The retarding force profiles available for copper and its solid‐solutions are shown to explain reported deviations from the Cottrell‐Stokes law. It is shown that the Cottrell‐Stokes law is not valid and only approximated when a large athermal force must be overcome by an applied stress attempting to translate a dislocation segment past a rate‐controlling obstacle to dislocation motion.