Elemental phase partitioning in the γ - γ" Ni2CoFeCrNb0.15 high entropy alloy

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

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Detail(s)

Original languageEnglish
Article number910
Journal / PublicationEntropy
Volume20
Issue number12
Online published28 Nov 2018
Publication statusPublished - Dec 2018

Abstract

The partitioning of the alloying elements into the γ" nanoparticles in a Ni2CoFeCrNb0.15 high entropy alloy was studied by the combination of atom probe tomography and first-principles calculations. The atom probe tomography results show that the Co, Fe, and Cr atoms incorporated into the Ni3Nb-type γ" nanoparticles but their partitioning behaviors are significantly different. The Co element is much easier to partition into the γ" nanoparticles than Fe and Cr elements. The first-principles calculations demonstrated that the different partitioning behaviors of Co, Fe and Cr elements into the γ" nanoparticles resulted from the differences of their specific chemical potentials and bonding states in the γ" phase.

Research Area(s)

  • Atom probe tomography, Elemental partitioning, First-principles calculations, Gamma double prime nanoparticles, High entropy alloy

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