Kinetically driven ordering in phase separating alloys

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    It is shown that in substitutional alloys, peculiar ordered patterns can result from neighborhood-dependent diffusion activation barriers even when there are no metastable ordered phases. Lattice gases with pure phase separation character are shown to exhibit transient ordered structures that can be retained almost indefinitely, although these structures are not at thermodynamic equilibrium. It is shown that such structures can come about relatively easily by quenching from the high-temperature configurationally random solid solution.

    Original languageEnglish
    Article number095601
    Number of pages8
    JournalPhysical Review Materials
    Issue number9
    Publication statusPublished - 2019


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