期刊
ACTA MATERIALIA
卷 149, 期 -, 页码 364-376出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.actamat.2018.02.053
关键词
CVD coatings; Micro-compression; Plasticity; Zr(C,N); Ti(C,N); EBSD
资金
- European Commission through Erasmus Mundus Doctoral Programme DocMASE
- European Commission through RISE Project CREATe-Network [644013]
- European Commission through EFRE project AME-Lab (European Regional Development Fund) [C/4-EFRE-13/2009/Br]
Micro-mechanical properties of Ti(C,N) and Zr(C,N) coatings deposited by chemical vapor deposition on a WC-Co cemented carbide substrate were examined by micro-compression testing using a nanoindenter equipped with a flat punch. Scanning Electron Microscopy, Focused Ion Beam, Electron Backscattered Diffraction and Finite Element Modeling were combined to analyze the deformation mechanisms of the carbonitride layers at room temperature. The results revealed that Ti(C,N) undergoes a pure intergranular crack propagation and grain decohesion under uniaxial compression; whereas the fracture mode of Zr(C,N) was observed to be inter/transgranular failure with unexpected plastic deformation at room temperature. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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