Open AccessIncrease of operational properties of tools and machine parts nitriding the powder mixture
Author(s) -
Viktoriia Kostyk,
Kateryna Kostyk,
Viktor Kovalov,
Raul Turmanidze,
Predrag Dašić
Publication year - 2019
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/568/1/012118
Subject(s) - nitriding , materials science , wear resistance , case hardening , metallurgy , durability , hardening (computing) , diffusion , reliability (semiconductor) , hardness , composite material , layer (electronics) , physics , thermodynamics , power (physics) , quantum mechanics
The effect of diffusion layers and alloying elements on surface hardness, micro-coarseness, and wear resistance of hardened tool steels in a nitrogen-containing medium is Studied. The experiments showed that nitriding in the powder mixture strengthens the surface layers in 2–3.5 times without reducing the volume strength of the material in question, which contributes to the preservation of high structural strength of tools and machine parts. It was found that nitriding in the dispersed powder mixture provides increased wear resistance of 1.3–2.5 times of steel, which can significantly improve the reliability and durability of products. Mathematical models of wear resistance of the investigated steels after the proposed hardening technology of nitriding are obtained.