Dynamical lattice models for binary alloys under irradiation: Mean-field solutions and Monte Carlo simulations
- 1 March 1992
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 45 (9) , 4582-4593
- https://doi.org/10.1103/physrevb.45.4582
Abstract
Ordering in binary bcc alloys under irradiation is studied using dynamical nearest-neighbor lattice models. Steady-state mean-field solutions (point and pair approximation) and Monte Carlo simulations are presented. Both for a model with a direct-exchange transport mechanism and for a model with a vacancy transport mechanism, it is found that the A2-B2 ordering transition becomes first order beyond a tricritical point (i.e., at high radiation flux). The effect of replacement collision sequences, induced by high-energy radiation, is also investigated.Keywords
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