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Structural hierarchy as a key to complex phase selection in Al-Sm

TitleStructural hierarchy as a key to complex phase selection in Al-Sm
Publication TypeJournal Article
Year of Publication2017
AuthorsYe, Z, Zhang, F, Sun, Y, Nguyen, MC, Zhou, SH, Zhou, L, Meng, F, Ott, RT, Park, E, Besser, M, Kramer, MJ, Ding, ZJ, Mendelev, MI, Wang, CZ, Napolitano, RE, Ho, KM
JournalPhysical Review Materials
Volume1
Pagination055601
Date Published10
Type of ArticleArticle
ISBN Number2475-9953
Accession NumberWOS:000416586400002
Keywordsamorphous-alloys, augmented-wave method, crystallization behavior, devitrification, diffraction, metallic-glass, nanocrystalline alloys, nanoquasicrystalline, quasi-crystals, re alloys
Abstract

first-shell packing around Sm centers on 16f sites, the same dominant motif exhibited by the undercooled liquid. The coincident motif supports the notion that liquid/glass ordering at high undercooling may give rise to topological invariants between the noncrystalline and crystalline states that provide kinetic pathways tometastable phases that are not accessible during near-equilibrium processing.

DOI10.1103/PhysRevMaterials.1.055601
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Structures and Dynamics