Effect of strengthening friction treatment on the chemical composition, structure, and tribological properties of a high-carbon steel / Makarov A. V.,Korshunov L. G.,Vykhodets V. B.,Kurennykh T. E.,Savrai R. A. // PHYSICS OF METALS AND METALLOGRAPHY. - 2010. - V. 110, l. 5. - P. 507-521.

ISSN/EISSN:

0031-918X / нет данных

Type:

Article

Abstract:

The structure and chemical composition of nanocrystalline layers formed on the surface of a steel U8 with 0.83 wt \% C (quenched, as well as quenched and tempered at 200A degrees C) under the conditions of frictional loading by a hard-alloy indenter in different media (gaseous and liquid nitrogen, air) have been investigated by the methods of transmission electron microscopy, X-ray diffraction analysis, nuclear reactions, Rutherford back scattering, and wave- and energy-dispersive microanalyses. Maximum levels of defectiveness (high density of dislocations and point defects) and microhardness of the nanocrystalline structure have been attained upon friction treatment of the low-temperature tempered steel in a liquid-nitrogen medium because of deformation localization in a thin surface layer, intensification of deformation-induced dissolution of the E > carbide phase, and saturation of the layer with nitrogen and oxygen atoms, the latter dissolved in the liquid nitrogen as an impurity. A comparative analysis of the in-depth distribution of microhardness in frictionally strengthened surface layers has been performed for the steel with initial structures of tetragonal (untempered) and low-tempered (tempered at 200A degrees C) martensite. A markedly larger depth of strain hardening has been attained upon friction treatment in the quenched untempered steel due to effective development of deformation-induced dynamic aging of high-carbon martensite even at small deformations. It has been established that the strengthening upon deformation of the surface by a sliding indenter exerts a positive influence on the tribological properties (wear rate and friction coefficient) of the steel under the conditions of frictional heating of different intensity.

Author keywords:

eutectoid steel; friction treatment; nanocrystalline structures; chemical composition; microhardness; tribological properties WEAR-RESISTANCE; SURFACE-LAYER; OXYGEN DIFFUSION; NANOCRYSTALLIZATION; MICROANALYSIS; DEFORMATION; MARTENSITE; BEHAVIORS; CONTACT; IRON

DOI:

10.1134/S0031918X10110116

Web of Science ID:

ISI:000285095900011

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	NOV
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	WEAR-RESISTANCE; SURFACE-LAYER; OXYGEN DIFFUSION; NANOCRYSTALLIZATION; MICROANALYSIS; DEFORMATION; MARTENSITE; BEHAVIORS; CONTACT; IRON
Research-Areas	Metallurgy \& Metallurgical Engineering
Web-of-Science-Categories	Metallurgy \& Metallurgical Engineering
ResearcherID-Numbers	Makarov, Aleksey/D-5663-2016 Vykhodets, Vladimir/J-5231-2013 Savrai, Roman/D-5571-2016 Korshunov, Lev/J-4288-2013 Kurennykh, Tatiana/J-4828-2013
ORCID-Numbers	Makarov, Aleksey/0000-0002-2228-0643 Vykhodets, Vladimir/0000-0001-9522-9147 Savrai, Roman/0000-0001-9873-3621 Korshunov, Lev/0000-0002-1829-5658 Kurennykh, Tatiana/0000-0001-9859-3374
Funding-Acknowledgement	Institute of Mechanical Engineering; Institute of Metal Physics (Ural Division, Russian Academy of Sciences); Department of Power Engineering, Mechanical Engineering, Mechanics, and Control Processes {[}09-M-12-2002]; Russian Academy of Sciences {[}09-T-1-1002]; Russian Foundation for Basic Research {[}07-08-00279-a]
Funding-Text	This work was supported in part by the Institute of Mechanical Engineering and the Institute of Metal Physics (Ural Division, Russian Academy of Sciences), interdisciplinary project no. 09-M-12-2002, by the Program ``Tribological and Strength Properties of Structurized Materials and Surface Layers{''} of the Department of Power Engineering, Mechanical Engineering, Mechanics, and Control Processes, Russian Academy of Sciences, project no. 09-T-1-1002; and by the Russian Foundation for Basic Research, project no. 07-08-00279-a. The electron - microscopic investigations were performed by the method of thin foils (in transmission mode) in the Electron - Microscopy Department of the Center of Collaborative Access ({''}Testing Center of Nanotechnologies and Advanced Materials{''}), Institute of Metal Physics, Ural Division, Russian Academy of Sciences.
Number-of-Cited-References	53
Usage-Count-Since-2013	8
Journal-ISO	Phys. Metals Metallogr.
Doc-Delivery-Number	691QM