Investigation of the structural, mechanical and tribological properties of plasma electrolytic hardened chromium-nickel steel
Rakhadilov B. Seitkhanova A. Satbayeva Z. Yerbolatova G. Icheva Y. Sagdoldina Z.
November 2021MDPI
Lubricants
2021#9Issue 11
This paper investigates how electrolytic plasma hardening (PEH) bears upon the changes in the phase structural and tribological properties of steel 0.34C-1Cr-1Ni-1Mo-Fe, which is widely used in manufacturing highly stressed gears. The samples of steel 0.34C-1Cr-1Ni-1Mo-Fe went through the PEH in an electrolyte containing an aqua solution of 20% calcined soda (Na2 CO3 ) and 10% carbamide ((NH2 )2 CO). The initial steel 0.34C-1Cr-1Ni-1Mo-Fe is stated to have the following structural components: a lamellar pearlite with volume share of 35%, a ferrite-carbide mixture of ~45% and a fragmented ferrite of ~20%; after the PEH it contains lath-lamellar martensite, fine particles of cementite and M23 C6 carbide. The durability of steel 0.34C-1Cr-1Ni-1Mo-Fe was found to rise by 3.4 times after the PEH and its microhardness increased in 2.6 times. The curve-tension of the crystal lattice was established to be like plastic (χ = χpl ) and does not cause the formation of microcracks in the material.
Durability , Electrolytic-plasma hardening (PEH) , Microhardness , Modified layer , Phase composition , Wear-resisting properties
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Research Center Surface Engineering and Tribology, Sarsen Amanzholov East-Kazakhstan University, Ust-Kamenogorsk, 070000, Kazakhstan
PlasmaScience Ltd, Ust-Kamenogorsk, 070000, Kazakhstan
Department of Physics, Pavlodar Pedagogical University, Pavlodar, 140000, Kazakhstan
Institute of Composite Materials, Ust-Kamenogorsk, 070000, Kazakhstan
Department of Physics, D. Serikbayev East-Kazakhstan Technical University, Ust-Kamenogorsk, 070000, Kazakhstan
Department of Metallurgy and Natural Science Disciplines, Academician K. Satpayev Ekibastuz Engineering and Technical Institute, Ekibastuz, 141200, Kazakhstan
Research Center Surface Engineering and Tribology
PlasmaScience Ltd
Department of Physics
Institute of Composite Materials
Department of Physics
Department of Metallurgy and Natural Science Disciplines
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