IJMS SiC XPang accepted.pdf (1.18 MB)

Indentation in single-crystal 6H silicon carbide: Experimental investigations and finite element analysis

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journal contribution
posted on 23.11.2017, 15:19 by Ka-Ho (Xavier) Pang, Emil Tymicki, Anish Roy
Silicon 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 Sciences

Citation

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

© Elsevier

Version

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

13/11/2017

Publication date

2017

Notes

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

0020-7403

Language

en

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