Autors;
S. Fooladi Mahani (1); C. Liu (2); F. García-Marro (1,3); X.K. Cai (2); E.Jiménez-Piqué (1,3); L. Llanes (1,3)
1- CIEFMA, Department of Materials Science and Engineering, Universitat Politècnica de Catalunya – BarcelonaTech, Campus Diagonal Besòs-EEBE, Barcelona 08019, Spain
2- Xiamen Tungsten Co., Ltd., 361009 Xiamen, China
3- Barcelona Research Center in Multiscale Science and Engineering, Universitat Politècnica de Catalunya – BarcelonaTech, Campus Diagonal Besòs, 08019 Barcelona, Spain
Abstract:
Resistance to contact loading is a key issue to consider for microstructural design of cemented carbides to be used as tools and wear components. In this work, Vickers, conical and Hertzian indentation has been implemented to assess contact damage response for three microstructurally different WC-Co cemented carbides. Deformation and damage linked to induced imprints were inspected at both surface and subsurface levels, the latter through sequential tomography. Results are presented as damage maps as a function of applied load. It is found that critical load values for emergence of cracks as well as for their subsequent evolution are strongly dependent on indenter geometry (linked to specific stress field) and fracture toughness of the material. Practical implications of these findings, in terms of future damage tolerance studies, are finally discussed.
DOI:
https://doi.org/10.59499/EP235761011
