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On the Efficiency of Dislocation Climb in Gold
Author(s) -
Seidman D. N.,
Balluffi R. W.
Publication year - 1966
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.19660170208
Subject(s) - climb , supersaturation , vacancy defect , dislocation , materials science , diffusion , quenching (fluorescence) , condensed matter physics , thermodynamics , mechanics , crystallography , metallurgy , chemical physics , composite material , chemistry , physics , optics , fluorescence
The climb rate of the three‐dimensional dislocation network in gold is investigated experimentally under the following non‐equilibrium vacancy conditions: 1) supersaturation at elevated temperatures during rapid down‐quenching; 2) supersaturation at lower temperatures following a rapid down‐quench from an elevated temperature; 3) subsaturation during uppulsing and holding at an elevated temperature. It is found that the network climbs with a quite high efficiency under all the above conditions; that is, at a rate which is within a factor of one‐tenth to one of the maximum possible rate calculated on the assumption that vacancy equilibrium is maintained evergwhere along the dislocation cores and that the climb rate is therefore vacancy diffusion limited.