Analysis of Elastic-Plastic Deformation Law on 3C-SiC Ceramic Parts with Different Indenters by Nanoindentation via Molecular Dynamics Simulation

Liao, Dahai; Yin, Mingshuai; Yi, Jiaqi; Li, Wenjie; Jiang, Zhuting; Wu, Nanxing

doi:10.1007/s11837-022-05235-x

Cited by 6 publications

(2 citation statements)

References 25 publications

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“…At present, a great number of experiments [5][6][7][8] and simulations [9][10][11][12][13] have been carried out to investigate the deformation mechanisms of 3C-SiC. For instance, Mishra et al performed large-scale molecular dynamics (MD) simulations of nanoindentation and found that the primary deformation mechanisms of 3C-SiC are dislocation nucleation and propagation in the low pressure (zincblende) phase [11].…”

Section: Introductionmentioning

confidence: 99%

“…Goel et al investigated the influence of crystal anisotropy of 3C-SiC during its cutting behavior by MD simulations [12]. Liao et al employed MD simulations to analyze the elastic-plastic deformation law of 3C-SiC ceramic parts with hemispherical and regular pyramid indenters under ultimate loads and analyzed the evolution of dislocations in nanoindentation [13]. Although great insights into the deformation and damage of 3C-SiC have been gained using MD simulations, MD simulations usually fail to capture the spatial and temporal scales in experiments due to the high computational cost.…”

Section: Introductionmentioning

confidence: 99%

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Peridynamic simulations of damage in indentation and scratching of 3C-SiC

Zhu

2022

Journal of Materials Research

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The cubic silicon carbide (3C-SiC) has broad application prospects in many fields due to its excellent material properties. The modeling of damage in 3C-SiC due to contact loads is important yet challenging. In this paper, simulations based on ordinary state-based peridynamics (PD) theory are proposed to model the damage of 3C-SiC in indentation and scratching. The constitutive parameters of 3C-SiC for PD simulation are obtained by performing MD simulations of nanoindentation. It is found that in the indentation simulations the initiation and propagation of cracks are observed, which shows that the PD can model the crack formation and propagation in the indentation process of brittle solid materials. During the scratching process, the variation of friction force is consistent with that of material wear. It is also found that the specific cutting energy increases nonlinearly with the decrease of scratching depth due to size effect. In addition, for the scratching with double indenters, the volume of material removal is more than twice that of scratching with an indenter due to the coupling effect of the two indenters under certain conditions. This paper demonstrates that PD is a powerful tool to investigate the indentation and scratching process of brittle solid materials.

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