Highly ordered noncrystalline metallic phase

We report the characterization of a unique metallic glass that, during rapid cooling of an Al-Fe-Si melt, forms by nucleation, followed by growth normal to a moving interface between the solid and melt with partitioning of the chemical elements. We determine experimentally that this is not a polycry...

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Bibliographic Details
Published in:Physical review letters 2013-07, Vol.111 (1), p.015502-015502, Article 015502
Main Authors: Long, Gabrielle G, Chapman, Karena W, Chupas, Peter J, Bendersky, Leonid A, Levine, Lyle E, Mompiou, Frédéric, Stalick, Judith K, Cahn, John W
Format: Article
Language:English
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Summary:We report the characterization of a unique metallic glass that, during rapid cooling of an Al-Fe-Si melt, forms by nucleation, followed by growth normal to a moving interface between the solid and melt with partitioning of the chemical elements. We determine experimentally that this is not a polycrystalline composite with nanometer-sized grains, and conclude that this may be a new kind of structure: an atomically ordered, isotropic, noncrystalline solid, possessing no long-range translational symmetry.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.111.015502