Atom Probe Tomography of High-Entropy Alloy AlCoCrFeNi
https://doi.org/10.1134/S2079562920010145
Abstract
This paper represents results of study of the AlCoCrFeNi high-entropy alloy by means of atom probe tomography. Two phases were found, one of which is enriched in Fe and Cr, and the other in Ni and Al. Due to the complex surface morphology and spatial configuration of the phases, their analysis was carried out by various statistical methods. The Fe−Cr phase has a honeycomb structure that contains Co particles with a size from 1 to 10 nm. Enrichment of the cell boundaries with Fe and Cr atoms reaches 50 at. %. In turn, the Al–Ni phase is enriched with each of these elements up to 30 at. % and contains nanoscale precipitates of Fe and Cr atoms. The number density of these clusters is ~6 ⋅ 1017 cm–3.
About the Authors
S. V. Rogozhkin
Alikhanov Institute for Theoretical and Experimental Physics of National Research Centre “Kurchatov Institute”; National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
Moscow, 117218
Moscow, 115409 R
A. S. Shutov
Alikhanov Institute for Theoretical and Experimental Physics of National Research Centre “Kurchatov Institute”
Russian Federation
Russian Federation
Moscow, 117218
A. A. Khomich
Alikhanov Institute for Theoretical and Experimental Physics of National Research Centre “Kurchatov Institute”
Russian Federation
Russian Federation
Moscow, 117218
A. A. Nikitin
Alikhanov Institute for Theoretical and Experimental Physics of National Research Centre “Kurchatov Institute”; National Research Nuclear University MEPhI (Moscow Engineering Physics Institute)
Russian Federation
Russian Federation
Moscow, 117218
Moscow, 115409 R
A. A. Lukyanchuk
Alikhanov Institute for Theoretical and Experimental Physics of National Research Centre “Kurchatov Institute”
Russian Federation
Russian Federation
Moscow, 117218
O. A. Raznitsyn
Alikhanov Institute for Theoretical and Experimental Physics of National Research Centre “Kurchatov Institute”
Russian Federation
Russian Federation
Moscow, 117218
L. Meshi
Department of Materials Engineering, Ben Gurion University of the Negev
Israel
Israel
P.O. Box 653, Beer-Sheva
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Review
For citations:
Rogozhkin S.V., Shutov A.S., Khomich A.A., Nikitin A.A., Lukyanchuk A.A., Raznitsyn O.A., Meshi L. Atom Probe Tomography of High-Entropy Alloy AlCoCrFeNi. Nuclear Physics and Engineering. 2020;11(3):139-151. (In Russ.) https://doi.org/10.1134/S2079562920010145
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