This article is cited in 1 paper

Studying changes in the microhardness of a zirconium surface modified by laser processing

V. I. Proskuryakov, I. V. Rodionov, V. A. Koshuro

Yuri Gagarin State Technical University of Saratov

Abstract: The results of an investigation of the process of laser-induced hardening of zirconium (E110 alloy) are reported. It has been established that the laser treatment in air results in the formation of a uniformly distributed microrelief characterized by the presence of microparticles with various configurations. Overlap of the laser beam trajectories leads to the formation of a layered structure. The composition of laser-modified surface depends on the regime of processing and mostly comprises a mixture of zirconium oxides and nitrides. In addition, the formation of diffuse transition zones between the bulk metal and modified surface layer is established. The dependence of the thickness of the hardened layer on the regime of pulsed laser action is determined.

Received: 16.11.2018
Revised: 16.11.2018
Accepted: 24.12.2018

DOI: 10.21883/PJTF.2019.06.47493.17598

 English version: Technical Physics Letters, 2019, 45:3, 263–266

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