Abstract
The effect of a high-power ion beam of nanosecond duration on the stress-strain state of the surface layer of aluminum and its alloys is studied. The data of elemental and phase analysis, residual stresses, sizes of coherent-scattering regions and dislocation density are compared with the microhardness value for different irradiation regimes. A decrease in the lattice parameters of the α phase of aluminum with an increase in the ion current density is found, which indicates the deforming effect of the resulting compressive residual stresses during irradiation with a high-power ion beam. Analysis of the sizes of the coherent-scattering regions in alloys compared with pure aluminum shows a tendency toward their decrease; in D16 alloy grinding occurs by a factor of 1.5, the dislocation density increases by a factor of two, and in V95T alloy, the dislocation density increases by a factor of 3. This trend indicates the significant influence of alloying elements on the dispersion and density of dislocations with varying irradiation parameters.
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The work was performed using equipment of the Omsk Regional Center for Collective Use, Siberian Branch, Russian Academy of Sciences.
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Panova, T.V., Kovivchak, V.S. Modification of the Properties of Surface Layers of Aluminum Alloys under the Action of a High-Power Ion Beam. J. Surf. Investig. 17, 332–337 (2023). https://doi.org/10.1134/S1027451023020131
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DOI: https://doi.org/10.1134/S1027451023020131