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Title | Impact of Magnetic-Pulse and Chemical-Thermal Treatment on Alloyed Steels’ Surface Layer |
Authors |
Kostyk, K.
Kuric, I. Saga, M. Kostyk, V. Ivanov, Vitalii Oleksandrovych Kovalov, V. Pavlenko, Ivan Volodymyrovych |
ORCID |
http://orcid.org/0000-0003-0595-2660 http://orcid.org/0000-0002-6136-1040 |
Keywords |
sustainable manufacturing alloy steel hard alloys surface hardening magnetic-pulse treatment nitriding boriding layer thickness hardness |
Type | Article |
Date of Issue | 2022 |
URI | https://essuir.sumdu.edu.ua/handle/123456789/87755 |
Publisher | MDPI |
License | Creative Commons Attribution 4.0 International License |
Citation | Kostyk, K.; Kuric, I.; Saga, M.; Kostyk, V.; Ivanov, V.; Kovalov, V.; Pavlenko, I. Impact of Magnetic-Pulse and Chemical-Thermal Treatment on Alloyed Steels’ Surface Layer. Appl. Sci. 2022, 12, 469. https://doi.org/10.3390/app12010469 |
Abstract |
The relevant problem is searching for up-to-date methods to improve tools and machine parts’ performance due to the hardening of surface layers. This article shows that, after the magnetic-pulse treatment of bearing steel Cr15, its surface microhardness was increased by 40–50% compared to baseline. In this case, the depth of the hardened layer was 0.08–0.1 mm. The magnetic-pulse processing of hard alloys reduces the coefficient of microhardness variation from 0.13 to 0.06. A decrease in the coefficient of variation of wear resistance from 0.48 to 0.27 indicates the increased stability of physical and mechanical properties. The nitriding of alloy steels was accelerated 10-fold that of traditional gas upon receipt of the hardened layer depth of 0.3–0.5 mm. As a result, the surface hardness was increased to 12.7 GPa. Boriding in the nano-dispersed powder was accelerated 2–3-fold compared to existing technologies while ensuring surface hardness up to 21–23 GPa with a boride layer thickness of up to 0.073 mm. Experimental data showed that the cutting tool equipped with inserts from WC92Co8 and WC79TiC15 has a resistance relative to the untreated WC92Co8 higher by 183% and WC85TiC6Co9—than 200%. Depending on alloy steel, nitriding allowed us to raise wear resistance by 120–177%, boriding—by 180–340%, and magneto-pulse treatment—by more than 183–200%. |
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Kostyk_at_al_Impact_2022.pdf | 61.36 MB | Adobe PDF | -1697351190 |
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