Tribological properties of experimental hard alloys in conditions of friction on structural steel without lubricant

Tribological properties of the experimental grades of high entropy hard alloys with modified binding phase on cobalt, which are characterized by minimal value of absolute t.m.f. to carbide phase, were experimentally investigated. It was established experimentally that new grades obtain better fricti...

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Bibliographic Details
Published inMATEC Web of Conferences Vol. 226; p. 1006
Main Authors Fominoff, Evgeniy V., Shuchev, Constantine G., Khozyaev, Igor A., Tsarev, Yuriy A., Rykov, Viktor B.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Les Ulis EDP Sciences 01.01.2018
Subjects
Adhesive joints
Alloys
Cermets
Friction
High entropy alloys
Lubricants
Lubricants & lubrication
Mechanical properties
Shielding
Structural steels
Tribology
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Summary:Tribological properties of the experimental grades of high entropy hard alloys with modified binding phase on cobalt, which are characterized by minimal value of absolute t.m.f. to carbide phase, were experimentally investigated. It was established experimentally that new grades obtain better friction characteristics in comparison with the base alloy grade VK8 because friction processes of these materials in contact with structural steels are characterized by lower friction forces and lower temperatures in the friction zones. The ‘third body’ which is thicker than for the base alloy grade VK8, obtains a positive gradient of mechanical properties in friction zone, has a shielding effect, reduces the rate of generation of adhesive joints (welding bridges), and, perhaps, performs the role of dry lubrication.
ISSN:2261-236X
2274-7214
2261-236X
DOI:10.1051/matecconf/201822601006