Abstract
AbstractRecent results are presented which indicate that the core structure of anti-phase boundaries is sensitive to changes in temperature and alloy composition. Isolated anti-phase boundaries in CoPt3 are found to undergo a structural change when the order-disorder transition temperature is approached from below. Periodic anti-phase boundaries of the long period structures in Cu3Pd, Au3Zn and Au3Cu exhibit similar phenomena. Detailed results on the core structure of periodic boundaries in alloys annealed close to the order-disorder transition are compared to the results of a Monte Carlo analysis for finite temperatures of (100) anti-phase boundaries in L12 alloys.
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