Atom Probe Tomography of High-Entropy Alloy AlCoCrFeNi

S. V. Rogozhkin; A. S. Shutov; A. A. Khomich; A. A. Nikitin; A. A. Lukyanchuk; O. A. Raznitsyn; L. Meshi

doi:10.1134/S106377882010021X

Atom Probe Tomography of High-Entropy Alloy AlCoCrFeNi

S. V. Rogozhkin, A. S. Shutov, A. A. Khomich, A. A. Nikitin, A. A. Lukyanchuk, O. A. Raznitsyn, L. Meshi

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Abstract

Abstract: In this paper, the results of study of the AlCoCrFeNi high-entropy alloy by means of atom probe tomography are presented. Two phases were found, one enriched in Fe and Cr and the other enriched in Ni and Al. Owing to the complex surface morphology and spatial configuration of the phases, they were analyzed by various statistical methods. The Fe–Cr phase has a honeycomb structure that contains Co particles with the characteristic size of ~10 nm. The enrichment of the cell boundaries in Fe and Cr atoms reaches 50 at %. In turn, the Al–Ni phase is enriched in each of these elements up to 30 at % and contains nanoscale precipitates of Fe and Cr atoms. The volume density of these clusters is ~5 × 10²² cm^–3.

Original language	English
Pages (from-to)	1644-1655
Number of pages	12
Journal	Physics of Atomic Nuclei
Volume	83
Issue number	12
DOIs	https://doi.org/10.1134/S106377882010021X
State	Published - Dec 2020
Externally published	Yes

Bibliographical note

Funding Information:
This work was supported by the Russian Foundation for Basic Research, project no. 18-38-00859. The atom probe tomography examinations were performed at the KAMIKS Shared Access Center ( http://kamiks.itep.ru/ ) at the Alikhanov Institute for Theoretical and Experimental Physics, National Research Center “Kurchatov Institute.”

Publisher Copyright:
© 2020, Pleiades Publishing, Ltd.

Keywords

atom probe tomography
data reconstruction algorithm
high-entropy alloys

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10.1134/S106377882010021X

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title = "Atom Probe Tomography of High-Entropy Alloy AlCoCrFeNi",

abstract = "Abstract: In this paper, the results of study of the AlCoCrFeNi high-entropy alloy by means of atom probe tomography are presented. Two phases were found, one enriched in Fe and Cr and the other enriched in Ni and Al. Owing to the complex surface morphology and spatial configuration of the phases, they were analyzed by various statistical methods. The Fe–Cr phase has a honeycomb structure that contains Co particles with the characteristic size of ~10 nm. The enrichment of the cell boundaries in Fe and Cr atoms reaches 50 at %. In turn, the Al–Ni phase is enriched in each of these elements up to 30 at % and contains nanoscale precipitates of Fe and Cr atoms. The volume density of these clusters is ~5 × 1022 cm–3.",

keywords = "atom probe tomography, data reconstruction algorithm, high-entropy alloys",

author = "Rogozhkin, {S. V.} and Shutov, {A. S.} and Khomich, {A. A.} and Nikitin, {A. A.} and Lukyanchuk, {A. A.} and Raznitsyn, {O. A.} and L. Meshi",

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doi = "10.1134/S106377882010021X",

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AU - Rogozhkin, S. V.

AU - Shutov, A. S.

AU - Khomich, A. A.

AU - Nikitin, A. A.

AU - Lukyanchuk, A. A.

AU - Raznitsyn, O. A.

AU - Meshi, L.

PY - 2020/12

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N2 - Abstract: In this paper, the results of study of the AlCoCrFeNi high-entropy alloy by means of atom probe tomography are presented. Two phases were found, one enriched in Fe and Cr and the other enriched in Ni and Al. Owing to the complex surface morphology and spatial configuration of the phases, they were analyzed by various statistical methods. The Fe–Cr phase has a honeycomb structure that contains Co particles with the characteristic size of ~10 nm. The enrichment of the cell boundaries in Fe and Cr atoms reaches 50 at %. In turn, the Al–Ni phase is enriched in each of these elements up to 30 at % and contains nanoscale precipitates of Fe and Cr atoms. The volume density of these clusters is ~5 × 1022 cm–3.

AB - Abstract: In this paper, the results of study of the AlCoCrFeNi high-entropy alloy by means of atom probe tomography are presented. Two phases were found, one enriched in Fe and Cr and the other enriched in Ni and Al. Owing to the complex surface morphology and spatial configuration of the phases, they were analyzed by various statistical methods. The Fe–Cr phase has a honeycomb structure that contains Co particles with the characteristic size of ~10 nm. The enrichment of the cell boundaries in Fe and Cr atoms reaches 50 at %. In turn, the Al–Ni phase is enriched in each of these elements up to 30 at % and contains nanoscale precipitates of Fe and Cr atoms. The volume density of these clusters is ~5 × 1022 cm–3.

KW - atom probe tomography

KW - data reconstruction algorithm

KW - high-entropy alloys

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Atom Probe Tomography of High-Entropy Alloy AlCoCrFeNi

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Keywords

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