Size effects of shear deformation response for nano-single crystals examined by the phase-field-crystal model

Wenquan Zhou; Jincheng Wang; Zhijun Wang; Qi Zhang; Can Guo; Junjie Li; Yaolin Guo

doi:10.1016/j.commatsci.2016.10.031

Size effects of shear deformation response for nano-single crystals examined by the phase-field-crystal model

Wenquan Zhou, Jincheng Wang, Zhijun Wang, Qi Zhang, Can Guo, Junjie Li, Yaolin Guo

School of Materials Sience and Engineering

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Employing the modified phase-field-crystal (MPFC) model, we investigated the size effects of shear deformation response on nano-single crystals by examining the elastic strain distribution at atomistic scales. Here, three specimens with different aspect ratios are explored. Three types of shear deformation behavior have been found, namely, bending, simple shear and the mixed-mode based on the competition of bending and shearing. Further, a size scale analysis indicates that the slope of the shear strain response curve decreased dramatically as the aspect ratio changed from 1 to 0.125. However, when the ratio increased from 1 to 8, the slope increased slowly until saturated.

Original language	English
Pages (from-to)	121-127
Number of pages	7
Journal	Computational Materials Science
Volume	127
DOIs	https://doi.org/10.1016/j.commatsci.2016.10.031
State	Published - 1 Feb 2017

Keywords

Aspect ratios
Modified phase-field-crystal model
Nano-single crystal
Size effects
Strain distribution

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10.1016/j.commatsci.2016.10.031

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title = "Size effects of shear deformation response for nano-single crystals examined by the phase-field-crystal model",

abstract = "Employing the modified phase-field-crystal (MPFC) model, we investigated the size effects of shear deformation response on nano-single crystals by examining the elastic strain distribution at atomistic scales. Here, three specimens with different aspect ratios are explored. Three types of shear deformation behavior have been found, namely, bending, simple shear and the mixed-mode based on the competition of bending and shearing. Further, a size scale analysis indicates that the slope of the shear strain response curve decreased dramatically as the aspect ratio changed from 1 to 0.125. However, when the ratio increased from 1 to 8, the slope increased slowly until saturated.",

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T1 - Size effects of shear deformation response for nano-single crystals examined by the phase-field-crystal model

AU - Zhou, Wenquan

AU - Wang, Jincheng

AU - Wang, Zhijun

AU - Zhang, Qi

AU - Guo, Can

AU - Li, Junjie

AU - Guo, Yaolin

PY - 2017/2/1

Y1 - 2017/2/1

N2 - Employing the modified phase-field-crystal (MPFC) model, we investigated the size effects of shear deformation response on nano-single crystals by examining the elastic strain distribution at atomistic scales. Here, three specimens with different aspect ratios are explored. Three types of shear deformation behavior have been found, namely, bending, simple shear and the mixed-mode based on the competition of bending and shearing. Further, a size scale analysis indicates that the slope of the shear strain response curve decreased dramatically as the aspect ratio changed from 1 to 0.125. However, when the ratio increased from 1 to 8, the slope increased slowly until saturated.

AB - Employing the modified phase-field-crystal (MPFC) model, we investigated the size effects of shear deformation response on nano-single crystals by examining the elastic strain distribution at atomistic scales. Here, three specimens with different aspect ratios are explored. Three types of shear deformation behavior have been found, namely, bending, simple shear and the mixed-mode based on the competition of bending and shearing. Further, a size scale analysis indicates that the slope of the shear strain response curve decreased dramatically as the aspect ratio changed from 1 to 0.125. However, when the ratio increased from 1 to 8, the slope increased slowly until saturated.

KW - Aspect ratios

KW - Modified phase-field-crystal model

KW - Nano-single crystal

KW - Size effects

KW - Strain distribution

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JO - Computational Materials Science

JF - Computational Materials Science

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Size effects of shear deformation response for nano-single crystals examined by the phase-field-crystal model

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Keywords

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