Specific features of stresses relaxation and recrystallization of steels under laser heating

Keywords

laser processing, steel, relaxation, recrystallization, strengthening, structure.

Cite as

Gubenko S. І. Specific features of stresses relaxation and recrystallization of steels under laser heating. Physicochemical Mechanics of Materials. 2023. 59(3), 15-22.

https://doi.org/10.15407/pcmm2023.03.015

Abstract

The features of the processes of plastic relaxation and recrystallization of steels of various types with different crystal lattices are studied. It has been established that structural signs of collective or secondary recrystallization, as well as high-speed shear or rotational plastic deformation, are observed in the laser impact zone. The conditions for the occurrence of these processes associated with the behavior of defects in the crystal structure under pulsed loading are discussed. It is shown that the conditions of laser exposure ensured the processes of restoring the structure of steels of a dynamic nature.

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