Changes in the Polycrystalline Alloy Microstructure Under Impact Action of Short Laser Pulses

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Abstract

A review of publications devoted to the application of pulsed laser radiation in the field of technologies has been performed. The advantages of laser shock peening of the processed product surfaces have been considered. The developmental model of point defects and dislocations under the shock-wave load of polycrystalline materials has been proposed. The high-quality compliance between the calculated dislocation density and experimental results related to the laser shock peening of AMg6 samples has been obtained.

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About the authors

Vladimir V. Likhanskiy

Research Center “Kurchatov Institute”; Lebedev Physical Institute of the Russian Academy of Sciences

Email: likhanskiy2020@mail.ru

Doctor of Physical and Mathematical Sciences, lead researcher, Laboratory of Physics of Nonequilibrium Processes in Materials, Troitsk separate subdivision

Russian Federation, Moscow; Moscow

Konstantin E. Ulybyshev

Research Center “Kurchatov Institute”; Lebedev Physical Institute of the Russian Academy of Sciences

Author for correspondence.
Email: Ulybyshev_KE@nrcki.ru

PhD in Physics and Mathematics, research engineer, Laboratory of Physics of Nonequilibrium Processes in Materials, Troitsk separate subdivision

Russian Federation, Moscow; Moscow

Nikolay N. Elkin

Research Center “Kurchatov Institute”

Email: elkin_nn@mail.ru

Doctor of Physical and Mathematical Sciences

Russian Federation, Moscow

Maxim V. Khorokhorin

Research Center “Kurchatov Institute”; Lebedev Physical Institute of the Russian Academy of Sciences

Email: m.khorokhorin@lebedev.ru

research assistant, Laboratory of Physics of Nonequilibrium Processes in Materials, Troitsk separate subdivision

Russian Federation, Moscow; Moscow

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Supplementary files

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2. Fig. 1. Grain size variation in the AZ31B Mg alloy under the laser shock peening according to the information [13]: a) – initial material; b) – single treatment; c) – double treatment; d) – quadruple treatment.

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3. Fig. 2. Dislocation structure of copper after impact hardening according to the data [15]: a) – near the grain boundary; b) – far from the grain boundary.

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4. Fig. 3. Comparison of experimental values by the dislocation density distribution along the sample depth after a single laser shock peening based on [21] with an evaluation approach using the calculated dependencies for the change in the shock wave amplitude in the sample [24] (the red markers are experimental results, the blue ones are calculated estimates).

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Copyright (c) 2025 Likhanskiy V.V., Ulybyshev K.E., Elkin N.N., Khorokhorin M.V.