Anisotropic and asymmetric deformation mechanisms of nanolaminated graphene/Cu composites
We conducted molecular dynamics (MD) simulations of tension and compression along the <112> direction and MD simulations of compression along the <110> and <111> directions on nanolaminated graphene/Cu (NGCu) composites to investigate the effects of the incorporated graphene and th...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2019-06-01
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| Series: | Nano Materials Science |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2589965119300108 |
| _version_ | 1811192024774213632 |
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| author | Shayuan Weng Huiming Ning Tao Fu Ning Hu Shu Wang Kaiyan Huang Xianghe Peng H. Jerry Qi Cheng Yan |
| author_facet | Shayuan Weng Huiming Ning Tao Fu Ning Hu Shu Wang Kaiyan Huang Xianghe Peng H. Jerry Qi Cheng Yan |
| author_sort | Shayuan Weng |
| collection | DOAJ |
| description | We conducted molecular dynamics (MD) simulations of tension and compression along the <112> direction and MD simulations of compression along the <110> and <111> directions on nanolaminated graphene/Cu (NGCu) composites to investigate the effects of the incorporated graphene and the deformation mechanisms related to the loading direction. The deformation behavior and the defect structures were found to be strongly dependent on the loading conditions. An asymmetric tension-compression deformation behavior was thus found in graphene/Cu nanolaminates under the <112> loading, which was dominated by stacking faults and deformation twins formed by dislocation slide under tension and compression, respectively. High density and ordered nanotwins were formed at the graphene/Cu interfaces. Two different formation mechanisms of the twins were found under the <112> compression, and the nucleated twins were easy to be thickened with the assistance of the graphene wrinkles. Multiple twins were formed under the <110> compression by the dislocation cross-slip. This study provides a way to introduce graphene reinforcement and twin boundary to Cu matrix composites and design nanotwinned graphene/Cu composites with excellent mechanical performance. Keywords: Deformation Mechanisms, Molecular Dynamics, Graphene/Cu Composites, Interface, Twin |
| first_indexed | 2024-04-11T23:45:13Z |
| format | Article |
| id | doaj.art-50af80187c4b463bb4ca23ef4ddb07cd |
| institution | Directory Open Access Journal |
| issn | 2589-9651 |
| language | English |
| last_indexed | 2024-04-11T23:45:13Z |
| publishDate | 2019-06-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Nano Materials Science |
| spelling | doaj.art-50af80187c4b463bb4ca23ef4ddb07cd2022-12-22T03:56:39ZengKeAi Communications Co., Ltd.Nano Materials Science2589-96512019-06-0112121130Anisotropic and asymmetric deformation mechanisms of nanolaminated graphene/Cu compositesShayuan Weng0Huiming Ning1Tao Fu2Ning Hu3Shu Wang4Kaiyan Huang5Xianghe Peng6H. Jerry Qi7Cheng Yan8College of Aerospace Engineering, Chongqing University, Chongqing, 400044, PR ChinaCollege of Aerospace Engineering, Chongqing University, Chongqing, 400044, PR China; State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Changsha 410082, PR China; Corresponding author. College of Aerospace Engineering, Chongqing University, 174 Shazheng St, Shapingba District, Chongqing 400044, PR China.College of Aerospace Engineering, Chongqing University, Chongqing, 400044, PR ChinaCollege of Aerospace Engineering, Chongqing University, Chongqing, 400044, PR China; Key Laboratory of Optoelectronic Technology and Systems of the Education Ministry of China, Chongqing University, Chongqing 400044, PR China; Corresponding author. College of Aerospace Engineering, Chongqing University, Chongqing, 400044, PR China.College of Aerospace Engineering, Chongqing University, Chongqing, 400044, PR ChinaCollege of Aerospace Engineering, Chongqing University, Chongqing, 400044, PR ChinaCollege of Aerospace Engineering, Chongqing University, Chongqing, 400044, PR ChinaThe George W. Woodruff School of Mechanical Engineering, Renewable Bioproduct Institute, Georgia Institute of Technology, Atlanta, GA, 30332, United StatesSchool of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology (QUT), 2 George Street, G.P.O. Box 2434, Brisbane, AustraliaWe conducted molecular dynamics (MD) simulations of tension and compression along the <112> direction and MD simulations of compression along the <110> and <111> directions on nanolaminated graphene/Cu (NGCu) composites to investigate the effects of the incorporated graphene and the deformation mechanisms related to the loading direction. The deformation behavior and the defect structures were found to be strongly dependent on the loading conditions. An asymmetric tension-compression deformation behavior was thus found in graphene/Cu nanolaminates under the <112> loading, which was dominated by stacking faults and deformation twins formed by dislocation slide under tension and compression, respectively. High density and ordered nanotwins were formed at the graphene/Cu interfaces. Two different formation mechanisms of the twins were found under the <112> compression, and the nucleated twins were easy to be thickened with the assistance of the graphene wrinkles. Multiple twins were formed under the <110> compression by the dislocation cross-slip. This study provides a way to introduce graphene reinforcement and twin boundary to Cu matrix composites and design nanotwinned graphene/Cu composites with excellent mechanical performance. Keywords: Deformation Mechanisms, Molecular Dynamics, Graphene/Cu Composites, Interface, Twinhttp://www.sciencedirect.com/science/article/pii/S2589965119300108 |
| spellingShingle | Shayuan Weng Huiming Ning Tao Fu Ning Hu Shu Wang Kaiyan Huang Xianghe Peng H. Jerry Qi Cheng Yan Anisotropic and asymmetric deformation mechanisms of nanolaminated graphene/Cu composites Nano Materials Science |
| title | Anisotropic and asymmetric deformation mechanisms of nanolaminated graphene/Cu composites |
| title_full | Anisotropic and asymmetric deformation mechanisms of nanolaminated graphene/Cu composites |
| title_fullStr | Anisotropic and asymmetric deformation mechanisms of nanolaminated graphene/Cu composites |
| title_full_unstemmed | Anisotropic and asymmetric deformation mechanisms of nanolaminated graphene/Cu composites |
| title_short | Anisotropic and asymmetric deformation mechanisms of nanolaminated graphene/Cu composites |
| title_sort | anisotropic and asymmetric deformation mechanisms of nanolaminated graphene cu composites |
| url | http://www.sciencedirect.com/science/article/pii/S2589965119300108 |
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