journal article·2018-05Open access

Investigations on micro-mechanical properties of polycrystalline Ti(C,N) and Zr(C,N) coatings

Idriss El Azhari, José Garcia, Mohammad Zamanzade, Flavio Soldera, Christoph Pauly, Luis Llanes, Frank Mücklich

Acta Materialia· Volume 149

Abstract

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.
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Research context

OpenAlex topics: Metal and Thin Film Mechanics · Advanced materials and composites · Diamond and Carbon-based Materials Research

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