Damage Accumulation Phenomena in Multilayer (TiAlCrSiY)N/(TiAlCr)N, Monolayer (TiAlCrSiY)N Coatings and Silicon upon Deformation by Cyclic Nanoindentation
Anatoly I. Kovalev,
Vladimir O. Vakhrushev,
Ben D. Beake,
Egor P. Konovalov,
Dmitry L. Wainstein,
Stanislav A. Dmitrievskii,
German S. Fox-Rabinovich,
Stephen Veldhuis
Affiliations
Anatoly I. Kovalev
State Scientific Centre, I.P. Bardin Central Research Institute for Ferrous Metallurgy, 23/9 bdg, 2, Radio Str., 105005 Moscow, Russia
Vladimir O. Vakhrushev
State Scientific Centre, I.P. Bardin Central Research Institute for Ferrous Metallurgy, 23/9 bdg, 2, Radio Str., 105005 Moscow, Russia
Ben D. Beake
Micro Materials Ltd., Willow House, Yale Business Village, Ellice Way, Wrexham LL13 7YL, UK
Egor P. Konovalov
State Scientific Centre, I.P. Bardin Central Research Institute for Ferrous Metallurgy, 23/9 bdg, 2, Radio Str., 105005 Moscow, Russia
Dmitry L. Wainstein
State Scientific Centre, I.P. Bardin Central Research Institute for Ferrous Metallurgy, 23/9 bdg, 2, Radio Str., 105005 Moscow, Russia
Stanislav A. Dmitrievskii
State Scientific Centre, I.P. Bardin Central Research Institute for Ferrous Metallurgy, 23/9 bdg, 2, Radio Str., 105005 Moscow, Russia
German S. Fox-Rabinovich
Department of Mechanical Engineering (JHE-316), McMaster University, 1280 Main Street West, Hamilton, Ontario, ON L8S 4L7, Canada
Stephen Veldhuis
Department of Mechanical Engineering (JHE-316), McMaster University, 1280 Main Street West, Hamilton, Ontario, ON L8S 4L7, Canada
The micromechanism of the low-cycle fatigue of mono- and multilayer PVD coatings on cutting tools was investigated. Multilayer nanolaminate (TiAlCrSiY)N/(TiAlCr)N and monolayer (TiAlCrSiY)N PVD coatings were deposited on the cemented carbide ball nose end mills. Low-cycle fatigue resistance was studied using the cyclic nanoindentation technique. The obtained results were compared with the behaviour of the polycrystalline silicon reference sample. The fractal analysis of time-resolved curves for indenter penetration depth demonstrated regularities of damage accumulation in the coatings at the early stage of wear. The difference in low-cycle fatigue of the brittle silicon and nitride wear-resistant coatings is shown. It is demonstrated that when distinguished from the single layer (TiAlCrSiY)N coating, the nucleation and growth of microcracks in the multilayer (TiAlCrSiY)N/(TiAlCr)N coating is accompanied by acts of microplastic deformation providing a higher fracture toughness of the multilayer nanolaminate (TiAlCrSiY)N/(TiAlCr)N.
