Effect of Substrate Material Compliance on the Character of Topocomposite Damage under Instrumental Indentation

— The character of deformation and damage to topocomposites upon instrumental indentation has been investigated. A topocomposite is considered as a layered system consisting of a thin hard coating coherently bound with a substrate made of a compliant solid material. Studies have been performed for a...

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Bibliographic Details
Published in:Journal of machinery manufacture and reliability 2020-12, Vol.49 (10), p.862-869
Main Author: Voronin, N. A.
Format: Article
Language:English
Subjects:
Aluminum
Damage
Deformation
Engineering
Hard surfacing
Indentation
Machines
Magnetron sputtering
Manufacturing
Processes
Reliability
Strength
Substrates
Titanium nitride
Wear Resistance of Machines and Structures
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Summary:— The character of deformation and damage to topocomposites upon instrumental indentation has been investigated. A topocomposite is considered as a layered system consisting of a thin hard coating coherently bound with a substrate made of a compliant solid material. Studies have been performed for a topocomposite consisting of a titanium nitride coating applied by means of magnetron sputtering in vacuum onto an aluminum alloy substrate. By comparing the energy balance of the model and experimental indentation diagrams, the amount of work done in deforming the layered system, in the interfacial separation at the coating-substrate interface, and in the formation of through-the-thickness annular cracks in the coating is assessed. The results of studies can be used for a qualitative assessment of the serviceability of functional surfaces for the machine parts hardened with coatings.
ISSN:1052-6188
1934-9394
DOI:10.3103/S1052618820100118