Non-Equilibrium Shells around Precipitates During the Decomposition of a Three-Component Alloy

I. K. Razumov; Разумов И. К.

doi:10.31857/S0044453723030238

Non-Equilibrium Shells around Precipitates During the Decomposition of a Three-Component Alloy

Authors: Razumov I.K.¹
Affiliations:
1. Institute of the Physics of Metals, Russian Academy of Sciences, Ural Branch
Issue: Vol 97, No 3 (2023)
Pages: 426-433
Section: ФИЗИЧЕСКАЯ ХИМИЯ ДИСПЕРСНЫХ СИСТЕМ И ПОВЕРХНОСТНЫХ ЯВЛЕНИЙ
Submitted: 27.02.2025
Published: 01.03.2023
URL: https://freezetech.ru/0044-4537/article/view/668811
DOI: https://doi.org/10.31857/S0044453723030238
EDN: https://elibrary.ru/DYETOA
ID: 668811

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Abstract

The kinetic theory of diffusion over vacancies is used to obtain expressions for the fluxes of atoms in a three-component alloy. This hole gas approach allows us to express kinetic coefficients in terms of the coefficients of diffusion of labeled atoms from microscopic considerations. The conditions for the formation of nonequilibrium impurity shells are revealed by studying the kinetics of decomposition using these expressions. These shells can considerably inhibit the growth of precipitates and change the properties of the alloy.

Keywords

spinodal decomposition, three-component alloy, impurity shells, microscopic theory of diffusion

About the authors

I. K. Razumov

Institute of the Physics of Metals, Russian Academy of Sciences, Ural Branch

Author for correspondence.
Email: rik@imp.uran.ru
6200990, Yekaterinburg, Russia

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