A highly ordered non-crystalline metallic phase

Published: July 05, 2013

Author(s)

Gabrielle G. Long, Karena Chapman, Peter Chupas, Leonid A. Bendersky, Lyle E. Levine, Frederic Mompiou, John W. Cahn, Judith K. Stalick

Abstract

We report the characterization of an ordered non-crystalline isotropic metallic solid that, during rapid cooling of an Al-Fe-Si melt, forms by nucleation, followed by growth along 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, non-crystalline solid, possessing no long-range translational symmetry.
Citation: Physical Review Letters
Volume: 111
Pub Type: Journals

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Keywords

metallic glass, ordering, phase transformation, pair distribution function analysis, X-ray scattering, Al-Fe-Si
Created July 05, 2013, Updated February 19, 2017