Hardening Curve Plotting and Determination of the Coating Limiting State Criterion based on the Continuous Indentation Method and Computational Modelling

The article describes the method of determining the parameters of the hardening curve of homogeneous and structured coatings (modulus of elasticity, tangential modulus of elasticity and yield strength) required for the strength analysis of parts with coatings that determine their basic performance a...

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Bibliographic Details
Published in:MATEC web of conferences 2018-01, Vol.220, p.1001
Main Authors: Ivanchenko, Alexander, Zhdanov, Alexey, Morozov, Valentin
Format: Article
Language:English
Subjects:
Algorithms
Coatings
Elastic deformation
Finite element method
Hardening
High speed tool steels
Modulus of elasticity
Nanoindentation
Parameters
Plastic deformation
Protective coatings
Tangential modulus
Yield strength
Yield stress
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Summary:The article describes the method of determining the parameters of the hardening curve of homogeneous and structured coatings (modulus of elasticity, tangential modulus of elasticity and yield strength) required for the strength analysis of parts with coatings that determine their basic performance and strength characteristics. The dependence for determination of tangential (tangential) modulus of elasticity using the results of nanoindentation is proposed. An algorithm for determining the yield strength of the coating material is developed based on solving the problem of elastic-plastic deformation of the coating during the introduction of the indenter by the finite element method. According to the proposed method, the parameters of the TiN/AlN in coating hardening curve were determined based on the results of indentation of the sample of tool high-speed steel with the appropriate coating.
ISSN:2261-236X
2274-7214
2261-236X
DOI:10.1051/matecconf/201822001001