Study of Tribotechnical Properties of Multilayer Nanostructured Coatings and Contact Processes during Milling of Titanium Alloys

The paper presents the results of theoretical and experimental research on tribotechnical characteristics: tool wear on the back surface, tool durability period, critical length of the cutting path before blunting, adhesion component of the friction coefficient, contact processes, temperature, and f...

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Bibliographic Details
Published in:Coatings (Basel) 2023-01, Vol.13 (1), p.171
Main Authors: Migranov, Mars Sharifullovich, Shehtman, Semen Romanovich, Sukhova, Nadezhda Aleksandrovna, Mitrofanov, Artem Petrovich, Gusev, Andrey Sergeevich, Migranov, Arthur Marsovich, Repin, Denis Sergeyevich
Format: Article
Language:English
Subjects:
Adhesion
Coefficient of friction
Cutting resistance
Cutting tools
Cutting wear
End milling
Lubricating properties
Multilayers
Nanostructure
Protective coatings
Temperature
Thermodynamic models
Titanium alloys
Titanium base alloys
Tool wear
Wear resistance
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Summary:The paper presents the results of theoretical and experimental research on tribotechnical characteristics: tool wear on the back surface, tool durability period, critical length of the cutting path before blunting, adhesion component of the friction coefficient, contact processes, temperature, and force dependences for the application of innovative nanostructured multilayer composite coatings on a tool for milling of titanium alloys. The proposed thermodynamic model of cutting tool wear allows us to determine the ways by which cutting tool wear intensity decreases and the conditions of increase in cutting tool wear resistance with wear-resistant coatings. A substantial increase in wear resistance of end mills when processing titanium alloys with the use of innovative multilayer nanostructured coatings is established, in particular an improvement of an average of 1.5–2 times. These positive results are related to a significant decrease in temperature–force loading in the cutting zone, a decrease in the friction coefficient (adhesion component), and the phenomenon of adaptation (self-organization) of friction surfaces during cutting by tools with wear-resistant coatings, contributing to the formation of films of various compounds with shielding, protective, and lubricating properties.
ISSN:2079-6412
2079-6412
DOI:10.3390/coatings13010171