Kinetic features of alloy ordering with many types of ordered domain: D03-type orderings

Authors

Kirill D. Belashchenko, ‘Kurchatov Institute’ Russian Research CentreFollow
G D Samolyuk, ‘Kurchatov Institute’ Russian Research Centre
V G Vaks, ‘Kurchatov Institute’ Russian Research CentreFollow

Document Type

Article

Date of this Version

1999

Citation

J. Phys.: Condens. Matter 11 (1999) 10567–10592. Printed in the UK; PII: S0953-8984(99)01706-3

Comments

Copyright 1999 IOP Publishing Ltd. Used by permission.

Abstract

The earlier-described master equation approach to the configurational kinetics of nonequilibrium alloys is used to study kinetic features of ‘multivariant’ orderings for which more than two types of ordered domain are possible. To this end we make extensive simulations of various phase transformations involving D0₃-type orderings for a number of alloy models. The microscopic structure of various antiphase boundaries in the D0₃ phase is also studied. A consistent approach to describing the effect of elastic forces on microstructural evolution is outlined and used to study the kinetics of a multivariant ordering accompanied by alloy decomposition. Our simulations reveal a number of peculiar kinetic features of multivariant orderings, many of them agreeing well with experimental observations.