Relating the strength of graphene/metal composites to the graphene orientation and position

Fei Shuang; Katerina E. Aifantis

doi:10.1016/j.scriptamat.2020.02.014

Relating the strength of graphene/metal composites to the graphene orientation and position

Fei Shuang, Katerina E. Aifantis

Civil and Architectural Engineering and Mechanics

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

39 Scopus citations

Abstract

This letter presents new insight on the underlying strengthening mechanisms that take place during deformation of iron-graphene (Fe/Gr) composites. Molecular dynamics revealed that the Gr orientation dictated the dislocation evolution during compression, revealing three possible dislocation-Gr interaction mechanisms: transmission, reflection and gliding. A new numerical materials design was therefore proposed of a lamellae Fe-Gr structure with a short graphene sheet inserted in Fe, whose orientation resulted in reflection. Decreasing the distance between the long and short Gr-sheets resulted in the stronger composites. This method can be used for predicting the properties of graphene reinforced composites based on the Gr structure.

Original language	English (US)
Pages (from-to)	70-75
Number of pages	6
Journal	Scripta Materialia
Volume	181
DOIs	https://doi.org/10.1016/j.scriptamat.2020.02.014
State	Published - May 2020

Keywords

Dislocations
Graphene
Molecular dynamics

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2020.02.014

Cite this

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title = "Relating the strength of graphene/metal composites to the graphene orientation and position",

abstract = "This letter presents new insight on the underlying strengthening mechanisms that take place during deformation of iron-graphene (Fe/Gr) composites. Molecular dynamics revealed that the Gr orientation dictated the dislocation evolution during compression, revealing three possible dislocation-Gr interaction mechanisms: transmission, reflection and gliding. A new numerical materials design was therefore proposed of a lamellae Fe-Gr structure with a short graphene sheet inserted in Fe, whose orientation resulted in reflection. Decreasing the distance between the long and short Gr-sheets resulted in the stronger composites. This method can be used for predicting the properties of graphene reinforced composites based on the Gr structure.",

keywords = "Dislocations, Graphene, Molecular dynamics",

author = "Fei Shuang and Aifantis, {Katerina E.}",

note = "Funding Information: The authors are grateful for the support of the U.S. Department of Energy, Office of Basic Energy Sciences under grant DE-SC0017715 , which made this work possible. Funding Information: The authors are grateful for the support of the U.S. Department of Energy, Office of Basic Energy Sciences under grant DE-SC0017715, which made this work possible. Publisher Copyright: {\textcopyright} 2020",

year = "2020",

month = may,

doi = "10.1016/j.scriptamat.2020.02.014",

language = "English (US)",

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T1 - Relating the strength of graphene/metal composites to the graphene orientation and position

AU - Shuang, Fei

AU - Aifantis, Katerina E.

N1 - Funding Information: The authors are grateful for the support of the U.S. Department of Energy, Office of Basic Energy Sciences under grant DE-SC0017715 , which made this work possible. Funding Information: The authors are grateful for the support of the U.S. Department of Energy, Office of Basic Energy Sciences under grant DE-SC0017715, which made this work possible. Publisher Copyright: © 2020

PY - 2020/5

Y1 - 2020/5

N2 - This letter presents new insight on the underlying strengthening mechanisms that take place during deformation of iron-graphene (Fe/Gr) composites. Molecular dynamics revealed that the Gr orientation dictated the dislocation evolution during compression, revealing three possible dislocation-Gr interaction mechanisms: transmission, reflection and gliding. A new numerical materials design was therefore proposed of a lamellae Fe-Gr structure with a short graphene sheet inserted in Fe, whose orientation resulted in reflection. Decreasing the distance between the long and short Gr-sheets resulted in the stronger composites. This method can be used for predicting the properties of graphene reinforced composites based on the Gr structure.

AB - This letter presents new insight on the underlying strengthening mechanisms that take place during deformation of iron-graphene (Fe/Gr) composites. Molecular dynamics revealed that the Gr orientation dictated the dislocation evolution during compression, revealing three possible dislocation-Gr interaction mechanisms: transmission, reflection and gliding. A new numerical materials design was therefore proposed of a lamellae Fe-Gr structure with a short graphene sheet inserted in Fe, whose orientation resulted in reflection. Decreasing the distance between the long and short Gr-sheets resulted in the stronger composites. This method can be used for predicting the properties of graphene reinforced composites based on the Gr structure.

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KW - Graphene

KW - Molecular dynamics

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JO - Scripta Materialia

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Relating the strength of graphene/metal composites to the graphene orientation and position

Abstract

Keywords

ASJC Scopus subject areas

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