The cathodic electrolytic plasma hardening of the 20Cr2Ni4A chromium-nickel steel
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Date
2020
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Elsevier
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Abstract
In order to obtain the modified surface structure of the 20Cr2Ni4A steel plasma electrolytic
hardening (PEH) method was used. The surface hardening process was conducted in the
aqueous electrolyte solution of 20% sodium carbonate and 20% urea. The sample consists
of a ferritic-pearlitic structure, i.e. the part retains its viscous core, and the surface layer contains carbide particles. Hardening process induces martensite transformation and creation
of carbide particles in the surface layer. The presence of carbide particles in the surface layers has a positive effect on the tribo-mechanical performance. Hardened structure 600 m
long was obtained with hardness increase up to 520 HV and 2.5 times higher wear resistance.
Tribological test results showed the difference of the coefficient of friction as a function of
surface roughness determined by plasma-electrolytic hardening process.
Keywords
Plasma-electrolytic hardening, 20Cr2Ni4A steel, Heat treatment, Hardness, Wear
Citation
Bauyrzhan K. Rakhadilov, Vladimir V. Buranich, Zarina A. Satbayeva, Zhuldyz B. Sagdoldina, Rauan S. Kozhanova, Alexander D. Pogrebnjak. The cathodic electrolytic plasma hardening of the 20Cr2Ni4A chromium-nickel steel. Journal of Materials Research and Technology. Volume 9, Issue 4. 2020. Pages 6969-6976.