Open AccessDevelopment and research of functional coatings with laser modification
Author(s) -
Gennady Gavrilov,
И. С. Белашова,
Evgeny A. Marinin
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/709/4/044033
Subject(s) - materials science , microstructure , coating , hardening (computing) , metallurgy , laser , surface tension , composite material , thermodynamics , optics , physics , layer (electronics)
The paper presents the study results of functional coatings of steel 45 formed by Ni, Cr, Mo, W alloying. The mechanical properties and relative resistance of steel 45 after alloying with these elements are presented. It is shown that the alloying coating thickness influence on the thickness of the functional coating. The analysis of the microstructure in the alloying area shows that the mass transfer of alloying components is realized mainly due to the convective motion of the melt. The surface tension of the melt depends on the temperature and the heterogeneity of the free surface heating of the alloying area. It was also found that the degree of hardening, the thickness and the microstructure of laser alloying depends on both the type of alloying component and the properties of the matrix material. The thickness of the alloying area depends not only on the thermophysical characteristics of the system but also on the energy parameters of the laser radiation.