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This article is cited in 4 scientific papers (total in 4 papers)
Impurity centers
Nonlinear dynamics of the formation of a periodic superstructure of impurity bands during rapid directional solidification of binary alloys
A. A. Chevrychkina, N. M. Bessonov, A. L. Korzhenevskii Institute of Problems of Mechanical Engineering, Russian Academy of Sciences, St. Petersburg
Abstract:
An analytical description is proposed for the nonlinear dynamics of formation of regular impurity superstructures during a rapid solidification of binary alloys supplemented by a numerical model calculation. It is shown that there is a stable limit cycle, and spatial profiles of the impurity concentration in a solid product are calculated. The inclusion of a finiteness of the impurity atom jump velocity is found to lead to very substantial decrease in the cycle sizes and a change in the profiles of impurity superstructures.
Keywords:
phase transitions, temperature gradient, mobile impurities, capillary-wave model, formation of periodic impurity superstructures.
Received: 25.06.2019 Revised: 25.06.2019 Accepted: 02.07.2019
Citation:
A. A. Chevrychkina, N. M. Bessonov, A. L. Korzhenevskii, “Nonlinear dynamics of the formation of a periodic superstructure of impurity bands during rapid directional solidification of binary alloys”, Fizika Tverdogo Tela, 61:11 (2019), 2122–2129; Phys. Solid State, 61:11 (2019), 2096–2103
Linking options:
https://www.mathnet.ru/eng/ftt8625 https://www.mathnet.ru/eng/ftt/v61/i11/p2122
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