The influence of tilt on Berkovich indentation of a steel sample using FEM analysis and nanoindentation

0579663 - FZÚ 2024 RIV PL eng C - Konferenční příspěvek (zahraniční konf.)
Kovář, J. - Fuis, V. - Čtvrtlík, Radim - Tomáštík, Jan
The influence of tilt on Berkovich indentation of a steel sample using FEM analysis and nanoindentation.
Proceedings of the conference Local Mechanical Properties. Warszawa: de Gruyter, 2022 - (Hvizdoš, P.; Shepa, I.; Ondrejová, K.; Bureš, R.; Martin, T.), s. 53-61. E-ISSN 1339-4533.
[International Conference on Local Mechanical Properties /15./. Košice (SK), 11.05.2022-13.05.2022]
Grant CEP: GA TA ČR TN01000038
Výzkumná infrastruktura: e-INFRA CZ - 90140
Institucionální podpora: RVO:68378271
Klíčová slova: nanoindentation * indenter shape deviations * indenter tilt * indenter bluntness
Obor OECD: Materials engineering
https://sciendo.com/article/10.2478/pmp-2022-0007

The main shape deviations of a Berkovich indenter are the indenter bluntness and indenter tilt. The influence of the Berkovich indenter tilt on the results of the FEM modelling of steel nanoindentation is evaluated in this paper. The indenter tilt has an impact on the indentation curves and contact area. The X5CrNiCuNb 16-4 steel nanoindentation was modelled by FEM and the indentation curves were obtained. The Berkovich indenter was blunted and the tilt of the indenter was changed to determine its influence on the indentation curves. The results showed that growing tilt shifts the indentation curves to higher values of indentation forces and makes unloading curves steeper which is in agreement with a larger contact area. The calculated indentation curves were compared with the experimental indentation curves and the impact of the indenter tilt to the indentation curves was determined.
Trvalý link: https://hdl.handle.net/11104/0348475