Anomalous X-Ray Scattering and Extended X-Ray Absorption Fine Structure Study of the Local Structure of CrFeCoNiMox (x = 0.11, 0.18, and 0.23) High-Entropy Alloys

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Detail(s)

Original languageEnglish
Pages (from-to)3285–3290
Journal / PublicationJOM
Volume73
Issue number11
Online published24 Sep 2021
Publication statusPublished - Nov 2021

Abstract

Anomalous x-ray scattering (AXS) and extended x-ray absorption fine structure (EXAFS) were used to determine the local structure of Mo in CrFeCoNiMox (x = 0.11, 0.18, and 0.23), a high-entropy alloy with a face-centered cubic (FCC) lattice. No superlattice peaks were observed down to the 10–4 intensity level. This observation along with the nearly constant decrease of the FCC diffraction peaks above the Mo K absorption edge suggests that Mo atoms have no preferred site occupancy in the FCC lattice. Modeling of the EXAFS data suggests a local chemical order in CrFeCoNiMox, where in Mo-rich samples (e.g., x = 0.23), Mo atoms are preferably surrounded by lighter atoms, such as Cr.

Citation Format(s)

Anomalous X-Ray Scattering and Extended X-Ray Absorption Fine Structure Study of the Local Structure of CrFeCoNiMox (x = 0.11, 0.18, and 0.23) High-Entropy Alloys. / HE, Haiyan; WANG, Bing; LAN, Si; RUFF, Jacob P. C.; SUN, Chengjun; NAEEM, Muhammad; LIU, Chain-Tsuan; WANG, Xun-Li.

In: JOM, Vol. 73, No. 11, 11.2021, p. 3285–3290.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review