Effect of Ti/Al Ratio on the Elemental Partitioning in the Face-Centered Cubic-Based γ-γ′ Dual-Phase High Entropy Alloy Studied by Atom Probe Tomography

Bin Han; Bin Han; Feng He; Feng He; Linfei Xia; Zhijun Wang; Ji Jung Kai; Ji Jung Kai

doi:10.3389/fmats.2022.806237

Frontiers in Materials (Mar 2022)

Effect of Ti/Al Ratio on the Elemental Partitioning in the Face-Centered Cubic-Based γ-γ′ Dual-Phase High Entropy Alloy Studied by Atom Probe Tomography

Bin Han,
Bin Han,
Feng He,
Feng He,
Linfei Xia,
Zhijun Wang,
Ji Jung Kai,
Ji Jung Kai

Affiliations

Bin Han: Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi’an, China
Bin Han: Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, China
Feng He: Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, China
Feng He: State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, China
Linfei Xia: Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi’an, China
Zhijun Wang: State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an, China
Ji Jung Kai: Department of Mechanical Engineering, City University of Hong Kong, Kowloon, Hong Kong SAR, China
Ji Jung Kai: Centre for Advanced Nuclear Safety and Sustainable Development, City University of Hong Kong, Kowloon, Hong Kong SAR, China

DOI: https://doi.org/10.3389/fmats.2022.806237
Journal volume & issue: Vol. 9

Abstract

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The effect of Ti/Al ratio on the elemental partitioning in the Ni2CoFeCrTixAly high entropy alloy was studied by atom probe tomography (APT). The APT results indicate that the γ′ nanoparticles have a composition of (NiCoFeCr)3TiAl which is independent of Ti/Al ratio. The effect of Ti/Al ratio on the partitioning behaviors of Fe and Cr are significantly different from that of Co. The decreasing of Ti/Al ratio significantly enhanced the incorporation of Fe and Cr into the γ′ nanoparticles. However, the concentration of Co in the γ′ nanoparticles declined with the decrease of Ti/Al ratio.

Published in Frontiers in Materials

ISSN: 2296-8016 (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Technology
Website: https://www.frontiersin.org/journals/materials

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