首页|Experimental investigation of the local environment and lattice distortion in refractory medium entropy alloys
Experimental investigation of the local environment and lattice distortion in refractory medium entropy alloys
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NSTL
Elsevier
? 2022 Acta Materialia Inc.EXAFS analysis of pure elements, binary and ternary equiatomic refractory alloys within the Nb-Zr-Ti-Hf-Ta system is performed at the Nb and Zr K-edges to analyze the evolution of the chemical local environment and the lattice distortion. A good mixing of the elements is found at the atomic scale. For some compounds, a distribution of distances between the central atom and its neighbors suggests a distortion of the structure. Finally, analysis of the Debye-Waller parameters shows some correlation with the lattice distortion parameter δ2, and allows to quantify experimentally the static disorder in medium entropy alloys.
Extended X-ray absorption fine structure (EXAFS)Lattice distortionLocal environmentMulticomponent alloysRefractory
Lilensten L.、Amann F.、Provost K.、Perriere L.、Couzinie J.-P.、Guillot I.、Fonda E.、Radtke M.、Dirras G.
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Chimie ParisTech PSL University CNRS Institut de Recherche de Chimie Paris
Université Paris Est Créteil CNRS ICMPE UMR7182
Synchrotron SOLEIL L'Orme des Merisiers
BAM Bundesanstalt für Materialforschung und -prüfung Richard-Willst?tter Strasse 11
Université Paris 13 Sorbonne Paris Cité CNRS LSPM (UPR 3407)
NSTL
Elsevier
