IJMS SiC XPang accepted.pdf (1.18 MB)
Indentation in single-crystal 6H silicon carbide: Experimental investigations and finite element analysis
journal contribution
posted on 2017-11-23, 15:19 authored by Ka-Ho (Xavier) Pang, Emil Tymicki, Anish RoyAnish RoySilicon carbide (SiC) is a promising material ideally suited for small-scaled devices deployed in harsh environments. SiC is brittle in bulk form, however, at small component length-scales plasticity is observed. A good understanding of deformation behaviour is, therefore, crucial for reliable small-scale component design and fabrication. Here, experimental and numerical analysis of the deformation behaviour of single-crystal 6H-SiC in nanoindentation is presented. Nanoindentation studies are carried out in two orientations of the single-crystal using a Berkovich indenter. Next, a crystal-plasticity theory was implemented in finiteelement (FE) modelling framework to predict the deformation of the hexagonal single-crystal. The validity of the present FE modelling methodology was corroborated through comparison between FE simulations and experimental data in terms of indent profile and loaddisplacement curves. Our results showed that classical crystal plasticity theory can be reliably applied in predicting plastic deformation of ceramic at small scales.
Funding
KHP acknowledges financial support from the Great Britain-China Educational Trust.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
International Journal of Mechanical SciencesVolume
144Pages
858-864Citation
PANG, K.H., TYMICKI, E. and ROY, A., 2017. Indentation in single-crystal 6H silicon carbide: Experimental investigations and finite element analysis. International Journal of Mechanical Sciences, 144, pp.858-864.Publisher
© ElsevierVersion
- AM (Accepted Manuscript)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/Acceptance date
2017-11-13Publication date
2017-11-22Copyright date
2018Notes
This paper was published in the journal International Journal of Mechanical Sciences and the definitive published version is available at https://doi.org/10.1016/j.ijmecsci.2017.11.021.ISSN
0020-7403Publisher version
Language
- en