Modelling and Simulations of Nanoindentation in Single Crystals

Liu, Qiang; Demiral, Murat; Roy, Anish

doi:10.1002/9781119084501.ch23

Cited by 2 publications

(1 citation statement)

References 51 publications

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“…Numerical studies based on crystal plasticity theory has been used extensively in modelling the deformation mechanisms in hexagonal closed packed (HCP) metallic material [19][20][21]. The technique has been used to model a host of nano-micro experimental studies including nanoindentation [22][23][24]. Recent study also show that the crystal plasticity framework is applicable in modelling ceramic materials which possess HCP crystalline structures [17].…”

Section: Single-crystal Plasticity Theorymentioning

confidence: 99%

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

Pang

Tymicki

Roy

2018

International Journal of Mechanical Sciences

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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.

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Section: Single-crystal Plasticity Theorymentioning

confidence: 99%

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

Pang

Tymicki

Roy

2018

International Journal of Mechanical Sciences

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Deformation Characteristics in Micromachining of Single Crystal 6H-SiC: Insight into Slip Systems Activation

2020

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Silicon carbide (SiC) is ideally suitable as a sensor material in harsh environments. Despite the brittleness in the macroscopic scale, plasticity in SiC is observed at small component length-scales. Previous nanoindentation based study combining experiment and numerical approaches of single-crystal 6H-SiC has shown that slip activation is rather complex, and that non-basal slip could potentially dominate the plastic deformation behaviour. In this study, we investigated the local deformation response evolution of shear strain directly under and in the vicinity of the indenter tip. The results show the pyramidal slip families contribute significantly to the deformation process.

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Modelling and Simulations of Nanoindentation in Single Crystals

Cited by 2 publications

References 51 publications

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

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

Deformation Characteristics in Micromachining of Single Crystal 6H-SiC: Insight into Slip Systems Activation

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