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Diffusion of Interstitial Solute in a Potential Well Characteristic of a Moving Dislocation
Author(s) -
FuentesSamaniego R.,
Hirth J. P.
Publication year - 1981
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.2221060140
Subject(s) - dislocation , diffusion , drag , mechanics , materials science , flux (metallurgy) , thermodynamics , solvent drag , chemistry , classical mechanics , physics , crystallography , microstructure , grain boundary , metallurgy
The equation governing the flux of interstitial solute near a moving dislocation is found. Such an equation is non‐linear, a feature which allows for the realistic situation that the solute concentration is bounded by the concentration of interstitial sites. However, in order to find analytical solutions, the alternative of a two‐dimensional, symmetric potential well characteristic of the dislocation is considered. Analytical determination of the properties of such a potential well as either a trap or a carrier of interstitial solute is made. The solute drag force‐velocity curves for the steady‐state motion of a potential well are obtained.