Effect of graphene addition on the mechanical characteristics of AA7075 aluminium nanocomposites

Raj, R. Ranga; Yoganandh, J.; Saravanan, M.; Kumar, Saurabh

doi:10.1007/s42823-020-00157-7

Cited by 43 publications

(13 citation statements)

References 46 publications

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“…% GnP nanocomposite and ~2.7 GPa for SPSed Al-5 wt. % GnP nanocomposite [71,72]. Figure 22 depicts the SEM micrographs of the worn surfaces of pure Al and Al-GnP nanocomposites.…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, there is a decrease in the strain to failure of ∼ 19.6% for conventionally sintered Al-3 wt.% GnP nanocomposite and ∼ 26.6% for SPSed Al-5 wt.% GnP nanocomposite, indicating an increase in the brittle nature of the nanocomposite with an increase in the loading level of GnPs in the nanocomposites. The highest elastic modulus of ∼ 883.5 MPa was observed for conventionally sintered Al-3 wt.% GnP nanocomposite and ∼ 2.7 GPa for the SPSed Al-5 wt.% GnP nanocomposite [71,72].…”

Section: Discussionmentioning

confidence: 99%

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Effect of graphite nanoplatelets on spark plasma sintered and conventionally sintered aluminum-based nanocomposites developed by powder metallurgy

Shrivastava

Alam

Maity

et al. 2021

Materials Science-Poland

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In this work, aluminum (Al)-based nanocomposites reinforced with graphite nanoplatelets (GnPs) have been fabricated by conventional sintering as well as spark plasma sintering (SPS) techniques, and their microstructure and mechanical properties have been studied. The powder metallurgy (PM) route has been adopted to fabricate the various Al–GnP nanocomposites. Characterization of the powder mixtures and the nanocomposites has been carried out through different characterization techniques, such as X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), and Raman spectroscopy. Compressive strength, Young's modulus, density, and Vickers microhardness of the various nanocomposites have also been determined. The HRTEM results show the formation of nonstoichiometric Al4C3 nanoparticles – during both conventional sintering and SPS – at the interface of the Al grains and GnP, which worsen the mechanical properties of the nanocomposites. SPSed nanocomposites show superior mechanical properties due to higher densification, finer grain size, and homogeneous nanofiller dispersion in the Al matrix, compared to the conventionally sintered Al–GnP nanocomposites.

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“…% GnP nanocomposite and ~2.7 GPa for SPSed Al-5 wt. % GnP nanocomposite [71,72]. Figure 22 depicts the SEM micrographs of the worn surfaces of pure Al and Al-GnP nanocomposites.…”

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Effect of graphite nanoplatelets on spark plasma sintered and conventionally sintered aluminum-based nanocomposites developed by powder metallurgy

Shrivastava

Alam

Maity

et al. 2021

Materials Science-Poland

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“…Nessa figura a microdureza encontra-se expressa em termos do ganho percentual relativo (comparação com o alumínio não reforçado), permitindo assim uma melhor comparação entre os diferentes trabalhos. A seleção dos trabalhos utilizados nesta comparação foi baseada na semelhança em termos de metodologia de processamento (metalurgia do pó/moagem de alta energia) (ALRASHEEDI, 2016;BAIG et al, 2018;BARTOLUCCI et al, 2011;DASARI et al, 2018;ELGHAZALY;ANIS;SALEM, 2017;KHAN et al, 2017;LATIEF et al, 2011;XIONG, 2017a;LI et al, 2018a;LIU et al, 2016a;PÉREZ-BUSTAMANTE et al, 2014;RAJ et al, 2020;SUN et al, 2017;SYED NASIMUL ALAMN, 2016;TURAN;AYDIN, 2020;WANG et al, 2019. Em função de não haver outros trabalhos na literatura até o momento que apresentem resultados de microdureza para NCMAs reforçados com rGO quimicamente reduzido, foi incluído nessa comparação os resultados de microdureza para o NCMA-rGO termicamente reduzido e NCMA reforçado com outros materiais grafênicos (GNPs ou GNS), como detalhado na legenda da Figura 6. Verifica-se nesta Figura, em função…”

Section: Microdureza Dos Ncmasunclassified

“…) foi o que ofereceu melhor desempenho em aumento de microdureza. Cabe ressaltar que dos três estudos que investigaram a utilização do rGO reduzido termicamente (em azul), um deles refere-se ao primeiro estudo realizado em 2011 por Bartolucci e colaboradores(BARTOLUCCI et al, 2011) e outro, mais recente(RAJ et al, 2020), embora tenha apresentado desempenho inferior no aumento em microdureza, apresentou um valor absoluto expressivo de ~160 HV (para 0,5% em massa de rGO). Entretanto, nesse trabalho os autores utilizam a liga de alumínio 7075 que já possui dureza elevada.…”

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Avaliação Da Microdureza De Nanocompósitos De Matriz De Alumínio Reforçados Com Óxido De Grafeno Reduzido

Maria¹,

Andrada²,

Siqueira³

et al. 2021

The Great World of Nanotechnology Vol II

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O conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons Atribuição-Não-Comercial NãoDerivativos 4.0 Internacional (CC BY-NC-ND 4.0). Direitos para esta edição cedidos à Editora Artemis pelos autores. Permitido o download da obra e o compartilhamento, desde que sejam atribuídos créditos aos autores, e sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comercial. A responsabilidade pelo conteúdo dos artigos e seus dados, em sua forma, correção e confiabilidade é exclusiva dos autores. A Editora Artemis, em seu compromisso de manter e aperfeiçoar a qualidade e confiabilidade dos trabalhos que publica, conduz a avaliação cega pelos pares de todos manuscritos publicados, com base em critérios de neutralidade e imparcialidade acadêmica.

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“…Fullerene-reinforced composites were made via highpressure torsion, according to [26]. A 2 vol % reinforcement of fullerene was found to increase microstructure and hardness performance significantly.…”

Section: Introductionmentioning

confidence: 99%

Investigation on the Properties of Multiwall Carbon Nanotube‐, Graphene‐, and Fullerene‐Reinforced Hot‐Extruded AA7075 Matrix Composites

Ramesh

Kumar²,

Chhabria³

et al. 2022

Journal of Nanomaterials

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The tremendous thermal and mechanical capabilities of carbon-based nanomaterials have drawn from researchers across the world. Composites reinforced with graphene nanoplatelets (GNPs), multiwall carbon nanotubes (MWCNT), and fullerenes (C20) were utilized in this study to increase their strength. A hot extrusion approach and a solution-based semipowder metallurgical technology were employed. Microscopically and mechanically, the samples were tested. Mechanical properties were assessed through the use of roughness and tensile tests. Even a small amount of nanocarbon (0.25 wt %) significantly improved the toughness and hardness qualities of AA7075. Composite reinforced with C20 was found to have higher hardness and yield strength than any other samples.

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Effect of graphene addition on the mechanical characteristics of AA7075 aluminium nanocomposites

Cited by 43 publications

References 46 publications

Effect of graphite nanoplatelets on spark plasma sintered and conventionally sintered aluminum-based nanocomposites developed by powder metallurgy

Effect of graphite nanoplatelets on spark plasma sintered and conventionally sintered aluminum-based nanocomposites developed by powder metallurgy

Avaliação Da Microdureza De Nanocompósitos De Matriz De Alumínio Reforçados Com Óxido De Grafeno Reduzido

Investigation on the Properties of Multiwall Carbon Nanotube‐, Graphene‐, and Fullerene‐Reinforced Hot‐Extruded AA7075 Matrix Composites

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