Abstract
Based on the physical processes analysis in the areas of pulsed laser applied on metals, the research reveals the peculiarities in self-organization of the structure, which leads to the formation of non-trivial properties of surface layers. Structural features of the hardening process during high-speed laser processing depend on the resulting level of strains in the processing zones, that is, on the ratio of plastic deformation processes during heating under the influence of thermal and phase strains and energy dissipation by polygonization and recrystallization. As a result, the effect of material strengthening is achieved not only by martensitic transformation, microchemical heterogeneity, but also by high-temperature riveting, increasing the density of crystal structure defects, plastic shifts under the strain of different nature.
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