Title
Influence of WC content on tribology behaviour and nanomechanical properties of NiAl-WC composites
Authors
[ 1 ] Wydział Inżynierii Materiałowej i Fizyki Technicznej, Politechnika Poznańska | [ 2 ] Instytut Inżynierii Materiałowej, Wydział Inżynierii Materiałowej i Fizyki Technicznej, Politechnika Poznańska | [ P ] employee
Scientific discipline (Law 2.0)
Year of publication
2026
Published in
Journal year: 2026 | Journal volume: vol. 584-585
Article type
scientific article
Publication language
english
Keywords
EN
- NiAl-based composites
- tungsten carbide
- wear resistance
- high-temperature tribology
- nanoindentation
- intermetallic
Abstract
EN In this study, the NiAl-xWC (x = 0, 10, 40, 80, and 90 wt%) were fabricated using mechanical alloying and hot pressing approaches. The tribological performance of the materials was examined using a ball-on-disc test configuration at room temperature (Tr) and 600 ◦C (Te). The effects of reinforcement phase content and temperature on the coefficient of friction (COF), mass change, and wear mechanisms were investigated. Moreover, composites were subjected to nanoindentation testing at room temperature. The friction behaviour of NiAl-WC composites depends strongly on both the amount of WC reinforcement and the test temperature. Increasing the reinforcement content generally reduces friction at (Tr), while at (Te), the opposite relation is observed. The microstructural and compositional analyses (SEM/EDS) enabled the characterisation of the prevailing wear mechanisms. Moreover, the nanoindentation analysis shows, that the addition of WC into NiAl greatly improves the composite’s Young’s modulus. As the WC content increases, the stiffness rises, with the highest value of 510 GPa observed at 90 wt% WC. This work provides new insights into the tribological properties analysis of NiAl-WC composite under various conditions, as well as, nanoindentation analysis.
Pages (from - to)
206409-1 - 206409-12
Ministry points / journal
200
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