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

Bin Han; Jie Wei; Feng He; Da Chen; Zhi Jun Wang; Alice Hu; Wenzhong Zhou; Ji Jung Kai

doi:10.3390/e20120910

Elemental phase partitioning in the γ - γ" Ni₂CoFeCrNb_0.15 high entropy alloy

Bin Han^*
, Jie Wei
, Feng He
, Da Chen
, Zhi Jun Wang
, Alice Hu
, Wenzhong Zhou
, Ji Jung Kai^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

13 Citations (Scopus)

97 Downloads (CityUHK Scholars)

Abstract

The partitioning of the alloying elements into the γ" nanoparticles in a Ni₂CoFeCrNb_0.15 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.

Original language	English
Article number	910
Journal	Entropy
Volume	20
Issue number	12
Online published	28 Nov 2018
DOIs	https://doi.org/10.3390/e20120910
Publication status	Published - Dec 2018

Research Keywords

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

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This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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RGC-funded

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10.3390/e20120910

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@article{6c165adb915c4dc0b8e2a65648a26566,

title = "Elemental phase partitioning in the γ - γ{"} Ni2CoFeCrNb0.15 high entropy alloy",

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.",

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

author = "Bin Han and Jie Wei and Feng He and Da Chen and Wang, \{Zhi Jun\} and Alice Hu and Wenzhong Zhou and Kai, \{Ji Jung\}",

year = "2018",

month = dec,

doi = "10.3390/e20120910",

language = "English",

volume = "20",

journal = "Entropy",

issn = "1099-4300",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

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TY - JOUR

T1 - Elemental phase partitioning in the γ - γ" Ni2CoFeCrNb0.15 high entropy alloy

AU - Han, Bin

AU - Wei, Jie

AU - He, Feng

AU - Chen, Da

AU - Wang, Zhi Jun

AU - Hu, Alice

AU - Zhou, Wenzhong

AU - Kai, Ji Jung

PY - 2018/12

Y1 - 2018/12

N2 - 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.

AB - 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.

KW - Atom probe tomography

KW - Elemental partitioning

KW - First-principles calculations

KW - Gamma double prime nanoparticles

KW - High entropy alloy

UR - https://www.scopus.com/pages/publications/85058932944

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85058932944&origin=recordpage

U2 - 10.3390/e20120910

DO - 10.3390/e20120910

M3 - RGC 21 - Publication in refereed journal

C2 - 33266634

SN - 1099-4300

VL - 20

JO - Entropy

JF - Entropy

IS - 12

M1 - 910

ER -

Elemental phase partitioning in the γ - γ" Ni₂CoFeCrNb_0.15 high entropy alloy

Abstract

Research Keywords

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GRF: Advanced Nuclear Structural Materials Development for the Next Generation Reactor Applications

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

Abstract

Research Keywords

Publisher's Copyright Statement

RGC Funding Information

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GRF: Advanced Nuclear Structural Materials Development for the Next Generation Reactor Applications

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Elemental phase partitioning in the γ - γ" Ni₂CoFeCrNb_0.15 high entropy alloy