Mechanisms of Deformation and Fracture of Thin Coatings on Different Substrates in Instrumented Indentation

G. M. Eremina, A. Y. Smolin, S. G. Psakhie

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Abstract

Mechanical properties of thin surface layers and coatings are commonly studied using instrumented indentation and scratch testing, where the mechanical response of the coating – substrate system essentially depends on the substrate material. It is quite difficult to distinguish this dependence and take it into account in the course of full-scale experiments due to a multivariative and nonlinear character of the influence. In this study the process of instrumented indentation of a hardening coating formed on different substrates is investigated numerically by the method of movable cellular automata. As a result of modeling, we identified the features of the substrate material influence on the derived mechanical characteristics of the coating – substrate systems and the processes of their deformation and fracture.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalRussian Physics Journal
Volume60
Issue number12
DOIs
Publication statusPublished - 2018

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Keywords

  • fracture
  • indentation
  • movable cellular automaton method
  • nanostructured coatings
  • simulation

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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