Grain boundary segregations in high entropy CoNiCrFeMn alloy. Atomistic MD/MC simulation
- Authors: Kar’kin I.N.1, Kar’kina L.E.1, Gornostyrev Y.N.2
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Affiliations:
- Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
- Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Scienc
- Issue: Vol 126, No 1 (2025)
- Pages: 38-45
- Section: СТРУКТУРА, ФАЗОВЫЕ ПРЕВРАЩЕНИЯ И ДИФФУЗИЯ
- URL: https://journals.rcsi.science/0015-3230/article/view/288525
- DOI: https://doi.org/10.31857/S0015323025010051
- EDN: https://elibrary.ru/BZXSWO
- ID: 288525
Cite item
Abstract
The formation of grain boundary segregations in the equiatomic high-entropy alloy (HEA) CoNiCrFeMn upon annealing at moderate temperatures was studied using atomistic MD/MC simulation. It has been established that at the early stage of annealing, regardless of the type of grain boundaries (GBs), two types of regions with chemical short-range order Ni–Mn–Cr and Fe–Co are formed in the volume of grains. With increasing annealing time, a pronounced tendency to the formation of unusually wide segregations on the GB is observed. The main element enriching the grain size is Cr, and Fe–Co clusters are displaced to the center of the grain. The influence of GB on the redistribution of alloy components and the phase stability of HEA is discussed.
About the authors
I. N. Kar’kin
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Email: lidiakarkina@gmail.com
Russian Federation, Ekaterinburg, 620108
L. E. Kar’kina
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Author for correspondence.
Email: lidiakarkina@gmail.com
Russian Federation, Ekaterinburg, 620108
Yu. N. Gornostyrev
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Scienc
Email: lidiakarkina@gmail.com
Russian Federation, Ekaterinburg, 620108
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