Study of crack resistance of TiAlN coatings by scratch testing

A. R. Shugurov, A. A. Akulinkin, A. V. Panin, V. P. Sergeev, M. P. Kalashnikov, A. V. Voronov, C. H. Cheng

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Scratch tests were performed to study failure mechanisms in TiAlN coatings deposited on substrates from steel 12Cr18Ni9Ti. It is shown that coating failure begins with crack generation at the apices of pile-ups formed along the scratch due to plastic ploughing of the substrate material. With further increase in indentation load the failure process is governed by the competition between tensile stresses behind the indenter arising due to friction force and stresses at the contact area periphery due to coating bending under normal load. Substrate pretreatment by Ti ion beams is shown to simultaneously increase the hardness and crack resistance of TiAlN coatings.

Original languageEnglish
Pages (from-to)185-192
Number of pages8
JournalPhysical Mesomechanics
Volume20
Issue number2
DOIs
Publication statusPublished - 1 Apr 2017

Fingerprint

cracks
Cracks
coatings
Coatings
Testing
Substrates
plowing
Steel
piles
tensile stress
indentation
Indentation
Tensile stress
pretreatment
Ion beams
Piles
apexes
friction
hardness
plastics

Keywords

  • crack resistance
  • deformation and failure
  • hard coatings
  • local surface curvature
  • scratch testing

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces

Cite this

Study of crack resistance of TiAlN coatings by scratch testing. / Shugurov, A. R.; Akulinkin, A. A.; Panin, A. V.; Sergeev, V. P.; Kalashnikov, M. P.; Voronov, A. V.; Cheng, C. H.

In: Physical Mesomechanics, Vol. 20, No. 2, 01.04.2017, p. 185-192.

Research output: Contribution to journalArticle

Shugurov, A. R. ; Akulinkin, A. A. ; Panin, A. V. ; Sergeev, V. P. ; Kalashnikov, M. P. ; Voronov, A. V. ; Cheng, C. H. / Study of crack resistance of TiAlN coatings by scratch testing. In: Physical Mesomechanics. 2017 ; Vol. 20, No. 2. pp. 185-192.
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