Lattice distortions in the FeCoNiCrMn high entropy alloy studied by theory and experiment

Journal article (2016)

Authors

H.S. Oh Max-Planck-Institut für Eisenforschung, Seoul National University
D Ma Max-Planck-Institut für Eisenforschung
G.P. Leyson Max-Planck-Institut für Eisenforschung
Blazej Grabowski Max-Planck-Institut für Eisenforschung
E.S. Park Seoul National University
F.H.W. Körmann (OLD) MSE-7
D. Raabe Max-Planck-Institut für Eisenforschung
Research Group
(OLD) MSE-7
Copyright: © 2016 H.S. Oh, D Ma, G.P. Leyson, B Grabowski, E.S. Park, F.H.W. Körmann, D. Raabe
DOI
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https://doi.org/10.3390/e18090321
Density functional theory OA-Fund TU Delft High entropy alloy Lattice distortions Extended X-ray absorption fine-structure spectroscopy
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Published Date

2016

Language

English

Research Group

(OLD) MSE-7

Abstract

Lattice distortions constitute one of the main features characterizing high entropy alloys. Local lattice distortions have, however, only rarely been investigated in these multi-component alloys. We, therefore, employ a combined theoretical electronic structure and experimental approach to study the atomistic distortions in the FeCoNiCrMn high entropy (Cantor) alloy by means of density-functional theory and extended X-ray absorption fine structure spectroscopy. Particular attention is paid to element-resolved distortions for each constituent. The individual mean distortions are small on average, <1%, but their fluctuations (i.e., standard deviations) are an order of magnitude larger, in particular for Cr and Mn. Good agreement between theory and experiment is found.