Open AccessExperimental and computational determination of hardened zones during laser hardening of steels
Author(s) -
A. P. Savin,
V. P. Biryukov,
D. V. Panov,
A. Prince,
Victor N. Petrovsky,
Д. В. Ушаков
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/747/1/012042
Subject(s) - hardening (computing) , materials science , tempering , composite material , laser , case hardening , metallurgy , laser beams , optics , hardness , physics , layer (electronics)
Experiments in defocus of beam rectangular-shaped fiber laser in the range of 30-65 mm. using a full factorial experiment, we constructed the surface to depth and width of the zone of hardening through varying the speed of the beam in the range of 15-20 mm/s, power 3-4 kW. Comparative wear tests have shown that laser hardening with a rectangular spot reduces the number of tempering zones and increases the wear resistance of 40Cr steel by 25-35% compared to hardening with a round spot.