Method of Estimation of Mechanical Properties of the Surface Layer of Cutter Elements Made of Polycrystalline Superhard Composites Based on Cubic Boron Nitride


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Abstract

Abstract—A method of estimating the mechanical properties of the surface layer of working elements made of polycrystalline superhard composites based on cubic boron nitride involving sclerometry at scanning by a diamond indenter has been proposed. Theoretical validation of the method has been provided and thermodynamic parameters of mechanical properties of the surface layer (the value of the activation barrier of initiation of the entropy production process and the capacity for entropy production at a metered impact) have been investigated. Results of the experiments on the performance efficiency of cutter tools made of superhard composites fabricated by lathing of tempered steel are provided and corroborate the theoretical assumptions.

About the authors

S. A. Klimenko

Bakul Institute for Superhard Materials, National Academy of Sciences of Ukraine

Email: kolmakov@imet.ac.ru
Ukraine, Kyiv, 04074

A. S. Manokhin

Bakul Institute for Superhard Materials, National Academy of Sciences of Ukraine

Email: kolmakov@imet.ac.ru
Ukraine, Kyiv, 04074

N. N. Belousova

Zhytomyr State Technological University

Email: kolmakov@imet.ac.ru
Ukraine, Zhytomyr, 10002

A. G. Kolmakov

Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences

Author for correspondence.
Email: kolmakov@imet.ac.ru
Russian Federation, Moscow, 119334

E. O. Nasakina

Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences

Email: kolmakov@imet.ac.ru
Russian Federation, Moscow, 119334

M. L. Heifets

Presidium of the National Academy of Sciences of Belarus

Email: kolmakov@imet.ac.ru
Belarus, Minsk, 220072

I. M. Zakiev

National Aviation University

Email: kolmakov@imet.ac.ru
Ukraine, Kyiv, 03058

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