Abstract
An analysis has been carried out of the experimental data concerning the interaction of pulsed laser radiation with the ultrafine-grained (UFG) Al-Mg alloys obtained by the methods of severe plastic deformation. It has been shown that the melting and pore formation in the UFG alloys under the effect of laser radiation start earlier than in their coarse-grained analogs. The observed behavior of the alloys can be explained from the united positions based on the concepts of the influence of the high concentration of nonequilibrium vacancies on the ability of the alloys to absorb the laser radiation and on the process of pore formation.
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Original Russian Text © P.Yu. Kikin, V.N. Perevezentsev, E.E. Rusin, 2015, published in Fizika Metallov i Metallovedenie, 2015, Vol. 116, No. 8, pp. 854–860.
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Kikin, P.Y., Perevezentsev, V.N. & Rusin, E.E. On the effect of nonequilibrium vacancies on the melting and pore formation in ultrafine-grained aluminum alloys subjected to pulsed laser irradiation. Phys. Metals Metallogr. 116, 810–816 (2015). https://doi.org/10.1134/S0031918X15080086
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DOI: https://doi.org/10.1134/S0031918X15080086