Atomistic investigation of the effect of nano-structural shape on the mechanical response of SiC/Cu interpenetrating phase nanocomposites

Shadlou, S.; Wegner, Leon D.

doi:10.1016/j.commatsci.2016.02.023

Cited by 7 publications

(2 citation statements)

References 33 publications

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“…The MD simulation of Dongare et al [18] showed that voids nucleate from the Al-Si interface, which is attributed to mechanical separation and sliding at the Al/Si interface rather than the dislocation pile-up. Shadlou and Wegner recently investigated the effect of nano-structural shape on the mechanical response of SiC/Cu nanocomposites [19]. They found that the spherical shape leads to superior mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Void initiation from interfacial debonding of spherical silicon particles inside a silicon-copper nanocomposite: a molecular dynamics study

Cui

Chen

2016

Modelling Simul. Mater. Sci. Eng.

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Silicon particles with diameters from 1.9 nm to 30 nm are embedded in a face-centered-cubic copper matrix to form nanocomposite specimens for simulation. The interfacial debonding of silicon particles from the copper matrix and the subsequent growth of nucleated voids are studied via molecular dynamics (MD). The MD results are examined from several different perspectives. The overall mechanical performance is monitored by the average stress–strain response and the accumulated porosity. The ‘relatively farthest-traveled’ atoms are identified to characterize the onset of interfacial debonding. The relative displacement field is plotted to illustrate both subsequent interfacial debonding and the growth of a nucleated void facilitated by a dislocation network. Our results indicate that the initiation of interfacial debonding is due to the accumulated surface stress if the matrix is initially dislocation-free. However, pre-existing dislocations can make a considerable difference. In either case, the dislocation emission also contributes to the subsequent debonding process. As for the size effect, the debonding of relatively larger particles causes a drop in the stress–strain curve. The volume fraction of second-phase particles is found to be more influential than the size of the simulation box on the onset of interfacial debonding. The volume fraction of second-phase particles also affects the shape of the nucleated void and, therefore, influences the stress response of the composite.

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Section: Introductionmentioning

confidence: 99%

Void initiation from interfacial debonding of spherical silicon particles inside a silicon-copper nanocomposite: a molecular dynamics study

Cui

Chen

2016

Modelling Simul. Mater. Sci. Eng.

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“…It has been reported in the literature that the shape of nanoparticles plays a major role in the mechanical behavior and performance of nanostructures (83,84). In this study, and in line with the literature, the shape factor was determined by changing the physicochemical parameters.…”

Section: Viscosity Studiesmentioning

confidence: 53%

Application of novel synthesized nanocomposites containing κ-carrageenan/PVA/eggshell in cement mortars

et al. 2020

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This study is a preliminary attempt to present the preparation and the first time a κ-carrageenan/PVA/eggshell nanostructure is used as a novel biodegradable and homogeneous nanostructure in cement composition. In order to clearly understand the effects these additives have on the mechanical properties of cementitious composites, they were synthesized in double and triple combinations and added into mortar mixtures. Three different cement mortar specimens were prepared by integrating the additives in ratios of 0, 0.1, 0.5 and 1% by cement weight and flexural and compressive strengths of the specimens were determined at the ages of 7 and 28 days. The flowability of the presented nanostructures was also discussed. The results revealed a 10–11% increase in both compressive and flexural strengths for the specimens prepared with the triple combination of the proposed additives. Moreover, strain capacity was enhanced as a result of the efficient dispersion of additives in the cement matrix.

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Shock response of metal-ceramic nanolayered composites

Zhan

Yao

Zhang

2020

Composites Part B: Engineering

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Atomistic investigation of the effect of nano-structural shape on the mechanical response of SiC/Cu interpenetrating phase nanocomposites

Cited by 7 publications

References 33 publications

Void initiation from interfacial debonding of spherical silicon particles inside a silicon-copper nanocomposite: a molecular dynamics study

Void initiation from interfacial debonding of spherical silicon particles inside a silicon-copper nanocomposite: a molecular dynamics study

Application of novel synthesized nanocomposites containing κ-carrageenan/PVA/eggshell in cement mortars

Shock response of metal-ceramic nanolayered composites

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