Grain-boundary ordering, segregation, and melting transitions in a two-dimensional lattice-gas model

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TR Number
Date
1989-06-01
Journal Title
Journal ISSN
Volume Title
Publisher
American Physical Society
Abstract

A two-dimensional lattice-gas model of a binary-ordering-alloy system was used to study the phase transitions and the atomic configuration near a Σ=5 grain boundary. The cluster variation method was used to study order-disorder and melting transitions in the bulk alloys. The complete binary phase diagrams were constructed for two different sets of interaction-energy assumptions. Simulations based on the same model were performed to study these transitions in the grain-boundary region. In addition, the model also yields information on the segregation behavior of the alloying elements in the grain-boundary region.

Description
Keywords
Physics, Condensed matter
Citation
Farkas, D.; Jang, H., "Grain-boundary ordering, segregation, and melting transitions in a two-dimensional lattice-gas model," Phys. Rev. B 39, 11769 DOI: http://dx.doi.org/10.1103/PhysRevB.39.11769