Interfacial Effect on the Deformation Mechanism of Bulk Nanolaminated Graphene-Al Composites

Lei Zhao; Qiang Guo; Yan Shi; Yu Liu; Shmuel Osovski; Zhiqiang Li; Ding Bang Xiong; Yishi Su; Di Zhang

doi:10.1007/s11661-018-05108-6

Interfacial Effect on the Deformation Mechanism of Bulk Nanolaminated Graphene-Al Composites

Lei Zhao, Qiang Guo, Yan Shi, Yu Liu, Shmuel Osovski, Zhiqiang Li, Ding Bang Xiong, Yishi Su, Di Zhang

Mechanical Engineering

Technion - Israel Institute of Technology

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

Abstract

Uniaxial tensile tests were carried on graphene (reduced graphene oxide, RGO)–Al laminated composites with Al lamella thicknesses varying from 1 μm down to 200 nm. It was found that there was a transition in plastic deformation mechanism, from a Hall–Petch-typed mechanism at 500 nm and 1 μm Al lamella thicknesses, to confined layer slip (CLS) of dislocations at the 200 nm Al lamella thickness. Moreover, the strengthening effect of RGO was only demonstrated in composite having 200-nm-thick Al lamellas, which can be rationalized by the enhanced barrier for dislocation de-pinning processes in the CLS mechanism.

Original language	English
Pages (from-to)	1113-1118
Number of pages	6
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	50
Issue number	3
DOIs	https://doi.org/10.1007/s11661-018-05108-6
State	Published - 15 Mar 2019

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys

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10.1007/s11661-018-05108-6

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title = "Interfacial Effect on the Deformation Mechanism of Bulk Nanolaminated Graphene-Al Composites",

abstract = "Uniaxial tensile tests were carried on graphene (reduced graphene oxide, RGO)–Al laminated composites with Al lamella thicknesses varying from 1 μm down to 200 nm. It was found that there was a transition in plastic deformation mechanism, from a Hall–Petch-typed mechanism at 500 nm and 1 μm Al lamella thicknesses, to confined layer slip (CLS) of dislocations at the 200 nm Al lamella thickness. Moreover, the strengthening effect of RGO was only demonstrated in composite having 200-nm-thick Al lamellas, which can be rationalized by the enhanced barrier for dislocation de-pinning processes in the CLS mechanism.",

author = "Lei Zhao and Qiang Guo and Yan Shi and Yu Liu and Shmuel Osovski and Zhiqiang Li and Xiong, \{Ding Bang\} and Yishi Su and Di Zhang",

note = "Publisher Copyright: {\textcopyright} 2019, The Minerals, Metals \& Materials Society and ASM International.",

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doi = "10.1007/s11661-018-05108-6",

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TY - JOUR

T1 - Interfacial Effect on the Deformation Mechanism of Bulk Nanolaminated Graphene-Al Composites

AU - Zhao, Lei

AU - Guo, Qiang

AU - Shi, Yan

AU - Liu, Yu

AU - Osovski, Shmuel

AU - Li, Zhiqiang

AU - Xiong, Ding Bang

AU - Su, Yishi

AU - Zhang, Di

PY - 2019/3/15

Y1 - 2019/3/15

N2 - Uniaxial tensile tests were carried on graphene (reduced graphene oxide, RGO)–Al laminated composites with Al lamella thicknesses varying from 1 μm down to 200 nm. It was found that there was a transition in plastic deformation mechanism, from a Hall–Petch-typed mechanism at 500 nm and 1 μm Al lamella thicknesses, to confined layer slip (CLS) of dislocations at the 200 nm Al lamella thickness. Moreover, the strengthening effect of RGO was only demonstrated in composite having 200-nm-thick Al lamellas, which can be rationalized by the enhanced barrier for dislocation de-pinning processes in the CLS mechanism.

AB - Uniaxial tensile tests were carried on graphene (reduced graphene oxide, RGO)–Al laminated composites with Al lamella thicknesses varying from 1 μm down to 200 nm. It was found that there was a transition in plastic deformation mechanism, from a Hall–Petch-typed mechanism at 500 nm and 1 μm Al lamella thicknesses, to confined layer slip (CLS) of dislocations at the 200 nm Al lamella thickness. Moreover, the strengthening effect of RGO was only demonstrated in composite having 200-nm-thick Al lamellas, which can be rationalized by the enhanced barrier for dislocation de-pinning processes in the CLS mechanism.

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DO - 10.1007/s11661-018-05108-6

M3 - مقالة

SN - 1073-5623

VL - 50

SP - 1113

EP - 1118

JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

IS - 3

ER -

Interfacial Effect on the Deformation Mechanism of Bulk Nanolaminated Graphene-Al Composites

Abstract

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