Simultaneous enhancement in mechanical and physical properties of graphene-oxide-reinforced Al matrix composites by trace-Mg-alloying strategy
This paper proposes a trace-Mg-alloying strategy to fabricate high-performance graphene oxide (GO)-reinforced Al metal matrix composites (MMC). A minute quantity (0.4 wt%) of elemental Mg was introduced in Al–Si alloy powders. Individual GO nanosheets were uniformly decorated onto the surface of the...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424007051 |
| _version_ | 1827216689123557376 |
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| author | Weiwei Zhou Kousuke Osano Naoki Kakegawa Naoyuki Nomura |
| author_facet | Weiwei Zhou Kousuke Osano Naoki Kakegawa Naoyuki Nomura |
| author_sort | Weiwei Zhou |
| collection | DOAJ |
| description | This paper proposes a trace-Mg-alloying strategy to fabricate high-performance graphene oxide (GO)-reinforced Al metal matrix composites (MMC). A minute quantity (0.4 wt%) of elemental Mg was introduced in Al–Si alloy powders. Individual GO nanosheets were uniformly decorated onto the surface of the AlSiMg particle through electrostatic attractions via hetero-agglomeration. A GO network was formed at the primary boundaries of AlSiMg particles through spark plasma sintering of GO/AlSiMg mixed powders. In this process, elemental Mg reacted with the oxygen atoms within GO nanosheets, resulting in the in situ production of high-quality reduced GO. Subsequent hot extrusion disrupted the GO network owing to the metal plastic flow, causing the GO nanosheets to realign in a single direction. Consequently, the tribological behavior, tensile response, and thermal and electrical conductivities of the GO/AlSiMg composites were simultaneously enhanced. Hot extrusion led to stretching of the overlapping GO nanosheets and increased surface contact area of AlSiMg powders. Thus, the extruded samples exhibited peak electrical conductivity at 0.2 wt% GO, whereas the sintered samples demonstrated peak thermal conductivity at 0.1 wt% GO. Overall, the findings of this study highlight the potential of merging trace powder alloying and powder metallurgy techniques to create multifunctional nanocarbon/MMCs without a trade-off between mechanical and physical performance. |
| first_indexed | 2024-04-24T12:51:22Z |
| format | Article |
| id | doaj.art-a8d1d178f5bf46df862e26658643e3fd |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2025-03-21T15:07:06Z |
| publishDate | 2024-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-a8d1d178f5bf46df862e26658643e3fd2024-06-20T06:52:56ZengElsevierJournal of Materials Research and Technology2238-78542024-05-013022722281Simultaneous enhancement in mechanical and physical properties of graphene-oxide-reinforced Al matrix composites by trace-Mg-alloying strategyWeiwei Zhou0Kousuke Osano1Naoki Kakegawa2Naoyuki Nomura3Corresponding author.; Department of Materials Processing, Graduate School of Engineering, Tohoku University, Sendai, 980-8579, JapanDepartment of Materials Processing, Graduate School of Engineering, Tohoku University, Sendai, 980-8579, JapanDepartment of Materials Processing, Graduate School of Engineering, Tohoku University, Sendai, 980-8579, JapanCorresponding author.; Department of Materials Processing, Graduate School of Engineering, Tohoku University, Sendai, 980-8579, JapanThis paper proposes a trace-Mg-alloying strategy to fabricate high-performance graphene oxide (GO)-reinforced Al metal matrix composites (MMC). A minute quantity (0.4 wt%) of elemental Mg was introduced in Al–Si alloy powders. Individual GO nanosheets were uniformly decorated onto the surface of the AlSiMg particle through electrostatic attractions via hetero-agglomeration. A GO network was formed at the primary boundaries of AlSiMg particles through spark plasma sintering of GO/AlSiMg mixed powders. In this process, elemental Mg reacted with the oxygen atoms within GO nanosheets, resulting in the in situ production of high-quality reduced GO. Subsequent hot extrusion disrupted the GO network owing to the metal plastic flow, causing the GO nanosheets to realign in a single direction. Consequently, the tribological behavior, tensile response, and thermal and electrical conductivities of the GO/AlSiMg composites were simultaneously enhanced. Hot extrusion led to stretching of the overlapping GO nanosheets and increased surface contact area of AlSiMg powders. Thus, the extruded samples exhibited peak electrical conductivity at 0.2 wt% GO, whereas the sintered samples demonstrated peak thermal conductivity at 0.1 wt% GO. Overall, the findings of this study highlight the potential of merging trace powder alloying and powder metallurgy techniques to create multifunctional nanocarbon/MMCs without a trade-off between mechanical and physical performance.http://www.sciencedirect.com/science/article/pii/S2238785424007051Metal matrix composites (MMCs)Graphene oxideTrace alloyingInterfacePhysical properties |
| spellingShingle | Weiwei Zhou Kousuke Osano Naoki Kakegawa Naoyuki Nomura Simultaneous enhancement in mechanical and physical properties of graphene-oxide-reinforced Al matrix composites by trace-Mg-alloying strategy Journal of Materials Research and Technology Metal matrix composites (MMCs) Graphene oxide Trace alloying Interface Physical properties |
| title | Simultaneous enhancement in mechanical and physical properties of graphene-oxide-reinforced Al matrix composites by trace-Mg-alloying strategy |
| title_full | Simultaneous enhancement in mechanical and physical properties of graphene-oxide-reinforced Al matrix composites by trace-Mg-alloying strategy |
| title_fullStr | Simultaneous enhancement in mechanical and physical properties of graphene-oxide-reinforced Al matrix composites by trace-Mg-alloying strategy |
| title_full_unstemmed | Simultaneous enhancement in mechanical and physical properties of graphene-oxide-reinforced Al matrix composites by trace-Mg-alloying strategy |
| title_short | Simultaneous enhancement in mechanical and physical properties of graphene-oxide-reinforced Al matrix composites by trace-Mg-alloying strategy |
| title_sort | simultaneous enhancement in mechanical and physical properties of graphene oxide reinforced al matrix composites by trace mg alloying strategy |
| topic | Metal matrix composites (MMCs) Graphene oxide Trace alloying Interface Physical properties |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424007051 |
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