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A highly ordered non-crystalline metallic phase

Published

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

Keywords

metallic glass, ordering, phase transformation, pair distribution function analysis, X-ray scattering, Al-Fe-Si
Created July 5, 2013, Updated February 19, 2017