Changing the structure and phasestates and the microhardness of the R6M5 steel surface layer after electrolytic-plasma nitriding

Rakhadilov, Bauyrzhan; Kurbanbekov, Sherzod; Kilishkhanov, M.K.; Kengesbekov, Aidar

doi:10.29317/ejpfm.2018020307

Cited by 4 publications

(2 citation statements)

References 1 publication

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“…It was experimentally proved that the considered factors of EPP modes affect the quality of the steel surface, which is strengthened. It should be noted that the main technological parameters, such as the thickness of strengthening, microhardness, and wear resistance of steel depend on the heating time, hardening time, the number of strengthening cycles by the EPP method and the electric current voltage [14]. Fig.…”

Section: Resultsmentioning

confidence: 99%

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Functional Surface Layer Strengthening and Wear Resistance Increasing of a Low Carbon Steel by Electrolytic-Plasma Processing

Kombayev¹,

Muzdybayev²,

Muzdybayeva³

et al. 2022

sv-jme

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The modified technology for strengthening the surface layer of low-carbon steel for machine components by electroplasma processing is proposed. This technology is to be used as an alternative carburizing method with subsequent hardening. The developed technology of strengthening by the proposed method is based on the author’s invention. The parameters of this process are given, resulting in a thickness of the reinforced surface layer of 1000 µm to 1700 µm. An increase in microhardness of 1.5 to 2 times (compared to the initial state) was observed. With hardening, chemical modification of the material’s surface layer occurs. The microstructure of the treated surface of the steel samples is characterised by a dark modified surface layer: a fine needle-like structure of martensitic origin under the dark layer transforms into an initial perlite-ferritic structure. The advantage of strengthening based on the electrolytic plasma processing consists of low energy consumption at high hardening speeds and the possibility of local processing of surface areas, especially large parts of complex shapes. In addition, the proposed surface treatment method using electrolytic plasma processing (EPP) not only achieves a smooth surface but also improves the service qualities of the components, specifically wear resistance.

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Section: Resultsmentioning

confidence: 99%

“…Experiments of this type can localize the area necessary and present all possible independent variables' values. Heating a sample of a component part in depth is associated with an inhomogeneous temperature distribution in the volume of the material of a component part [14].…”

Section: Methods and Experimental Approachmentioning

confidence: 99%

Functional Surface Layer Strengthening and Wear Resistance Increasing of a Low Carbon Steel by Electrolytic-Plasma Processing

Kombayev¹,

Muzdybayev²,

Muzdybayeva³

et al. 2022

sv-jme

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Influence of Plasma Arc Current and Gas Flow on the Structural and Tribological Properties of TiN Coatings Obtained by Plasma Spraying

Kengesbekov

2024

Coatings

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This study investigates the development of TiN-based coatings using plasma spraying technology, focusing on how plasma arc current and working gas flow rate affect the coatings’ structural-phase composition and mechanical–tribological properties. The research highlights the potential and effectiveness of plasma spraying for TiN coatings. Results from scanning electron microscopy and nanoindentation tests show that the TiN coatings have a dense microstructure with strong adhesion. Tribological testing demonstrated that coatings deposited at a 250 A arc current displayed the lowest coefficient of dry friction and the lowest porosity (2.13%) compared to those deposited at 350 A and 450 A arc currents, which exhibited higher porosity (up to 10.45%).

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Surface Modification of Chromium–Nickel Steel by Electrolytic Plasma Nitriding Method

Satbayeva,

Rakhadilov,

Turar

et al. 2024

Crystals

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Electrolytic plasma nitriding is an attractive chemical heat treatment used to improve the surface properties of steel by implementing nitrogen saturation. This method is widely applied to steel and iron-based alloys operating under various operating conditions. In this work, using liquid-phase plasma nitriding technology, a nitrided layer was obtained on the surface of 40CrNi steel in electrolytes of different concentrations. The microstructure and phase composition of the nitrided layer were investigated and analyzed using scanning electron microscopy (SEM) and X-ray diffraction (XRD), and we performed Vickers hardness and wear resistance tests using the ball-on-disc method. The microhardness and wear resistance of nitrided 40CrNi steel were significantly improved due to the lubricating properties of the ε-Fe2N phase formed on its surface.

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Changing the structure and phasestates and the microhardness of the R6M5 steel surface layer after electrolytic-plasma nitriding

Cited by 4 publications

References 1 publication

Functional Surface Layer Strengthening and Wear Resistance Increasing of a Low Carbon Steel by Electrolytic-Plasma Processing

Functional Surface Layer Strengthening and Wear Resistance Increasing of a Low Carbon Steel by Electrolytic-Plasma Processing

Influence of Plasma Arc Current and Gas Flow on the Structural and Tribological Properties of TiN Coatings Obtained by Plasma Spraying

Surface Modification of Chromium–Nickel Steel by Electrolytic Plasma Nitriding Method

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