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

Research output: Contribution to journalArticlepeer-review


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 languageEnglish
Pages (from-to)1644-1655
Number of pages12
JournalPhysics of Atomic Nuclei
Issue number12
StatePublished - Dec 2020
Externally publishedYes

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 ( ) at the Alikhanov Institute for Theoretical and Experimental Physics, National Research Center “Kurchatov Institute.”

Publisher Copyright:
© 2020, Pleiades Publishing, Ltd.


  • atom probe tomography
  • data reconstruction algorithm
  • high-entropy alloys


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