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Published on: June 13, 2015
Homogeneity of a supersaturated solid solution
1Department of Materials Science and Engineering, The Johns Hopkins University, Baltimore, Maryland 21218, USA.
Abstract:
Extended x-ray absorption fine structures, small-angle x-ray scattering, and atomistic model calculations have been employed to probe the homogeneity of the fcc solution created in Ag-Cu, a classical system demonstrating the extension of solubility across the entire miscibility gap through rapid quenching. Our results reveal that in many cases the supersaturated solutions formed have decomposition features on the scale of 1 nm. Conventional diffraction methods are inadequate in determining the level of supersaturation or the uniformity of such solid solution alloys.
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