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

https://doi.org/10.29317/ejpfm.2018020307

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Abstract

The article examines the changes of the structural-phase states and the microhardness of the R6M5 steel surface layer after electrolytic-plasma nitriding. It is found that after electrolytic-plasma nitriding of the R6M5 steel surface, diffusion layer is formed, which is a nitrogen martensite. The phase composition of the diffusion layer varies depending on the nitriding temperature. An increase of R6M5 steel microhardness, depending on structural-phase state, is found out. The main factor, in fluencing the increase of microhardness of R6M5 high-speed steel with electrolytic-plasma nitriding, is the formation of nitro . gen martensite with monophasic nitride Fe4N ( γ-phase), as well as the formation of fine inclusions, hardening phases in the surface layers.

About the Authors

B. K. Rakhadilov
East Kazakhstan State University
Kazakhstan


Sh. R. Kurbanbekov
East Kazakhstan State University
Kazakhstan


M. K. Kilishkhanov
East Kazakhstan State University
Kazakhstan


A. B. Kenesbekov
East Kazakhstan State University
Kazakhstan


S. .. Amanzholov
East Kazakhstan State University
Kazakhstan


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Review

For citations:


Rakhadilov B.K., Kurbanbekov S.R., Kilishkhanov M.K., Kenesbekov A.B., Amanzholov S... Changing the structure and phasestates and the microhardness of the R6M5 steel surface layer after electrolytic-plasma nitriding. Eurasian Journal of Physics and Functional Materials. 2018;2(3):259-266. https://doi.org/10.29317/ejpfm.2018020307

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ISSN 2522-9869 (Print)
ISSN 2616-8537 (Online)