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Correlation Factors for Diffusion in Binary Alloys with Short‐Range Order
Author(s) -
Stolwijk N. A.
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.2221050124
Subject(s) - binary number , statistical physics , diffusion , short range order , vacancy defect , range (aeronautics) , order (exchange) , alloy , atom (system on chip) , binary alloy , thermodynamics , correlation , materials science , mathematics , condensed matter physics , physics , computer science , metallurgy , arithmetic , geometry , finance , economics , composite material , embedded system
A method is presented for the calculation of the diffusion kinetics in binary alloys with only short‐range order. The method may be considered as an extension of Manning's theory on random alloys. Effects from atom‐vacancy exchanges on local order are taken into account in detail. The model is tested by comparing its results for alloys with nearest‐neighbour interactions with correlation factors obtained by computer simulation. For all sets of interatomic energies very good agreement is obtained over the entire temperature range. The present treatment of correlation effects may also be applied to more extended alloy models or to multicomponent systems.