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Journal of Materials Science

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12-10-2017 | Metals

A whole pattern iterative refinement method for powder X-ray diffraction spectra of two-phase coherent alloys

Authors: P. A. Ferreirós, G. H. Rubiolo

Published in: Journal of Materials Science | Issue 4/2018

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Abstract

An iterative refining method using FullProf software (Rietveld refinement) as a multi-input–output black-box with cyclic feedback is proposed in order to accurately measure the lattice misfit in two-phase coherent alloys. The method uses two X-ray diffraction spectra taken on the same powder sample. In addition, it requires the volumetric fraction of the phases and the size of the crystallite in the precipitated phase as derived from the measurements made by the transmission electron microscopy–energy dispersive spectroscopy technique. The measurement of the lattice misfit in a Fe₂AlV-strengthened ferritic Fe₇₆Al₁₂V₁₂ alloy is shown as an application of the method.

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Title: A whole pattern iterative refinement method for powder X-ray diffraction spectra of two-phase coherent alloys
Authors: P. A. Ferreirós
G. H. Rubiolo
Publication date: 12-10-2017
Publisher: Springer US
Published in: Journal of Materials Science / Issue 4/2018
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-017-1682-5

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