Carbon Nanotube-Reinforced Aluminum Matrix Composites Produced by High-Energy Ball Milling

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dc.citation.issue6
dc.citation.volume26
dc.contributor.authorTravessa, Dilermando N. [UNIFESP]
dc.contributor.authorda Rocha, Geovana V. B. [UNIFESP]
dc.contributor.authorCardoso, Katia R. [UNIFESP]
dc.contributor.authorLieblich, Marcela
dc.coverageNew York
dc.date.accessioned2020-07-13T11:53:04Z
dc.date.available2020-07-13T11:53:04Z
dc.date.issued2017
dc.description.abstractAlthough multiwall carbon nanotubes (MWCNT) are promising materials to strengthen lightweight aluminum matrix composites, their dispersion into the metallic matrix is challenge. In the present work, MWCNT were dispersed into age-hardenable AA6061 aluminum alloy by high-energy ball milling and the blend was subsequently hot-extruded. The composite bars obtained were heat-treated by solution heat treatment at 520 A degrees C and artificially aged at 177 A degrees C for 8 h, in order to reach the T6 temper. Special attention was given to the integrity of the MWCNT along the entire composite production. The microstructure of the obtained bars was evaluated by optical and scanning electron microscopy, and the mechanical properties were evaluated by Vickers microhardness tests. Raman spectroscopy, x-ray diffraction and transmission electron microscopy were employed to evaluate the structural integrity of MWCNT. It was found that milling time is critical to reach a proper dispersion of the reinforcing phase. The composite hardness increased up to 67% with the dispersion of 2% in weight of MWCNT, when comparing with un-reinforced bars produced by similar route. However, age hardening was not observed in composite bars after heat treatment. It was also found that MWCNT continuously degraded along the process, being partially converted into Al4C3 in the final composite.en
dc.description.affiliationUniv Fed Sao Paulo, ICT UNIFESP, Inst Ciencia & Tecnol, Rua Talim 330, BR-12231280 Sao Jose Dos Campos, SP, Brazil
dc.description.affiliationCENIM CSIC, CSIC, Ctr Nacl Invest Met, Avda Gregorio del Amo 8, Madrid 28040, Spain
dc.description.affiliationUnifespUniv Fed Sao Paulo, ICT UNIFESP, Inst Ciencia & Tecnol, Rua Talim 330, BR-12231280 Sao Jose Dos Campos, SP, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipFAPESP
dc.description.sponsorshipIDFAPESP: 2012/07831-2
dc.description.sponsorshipIDFAPESP: 2013/10570-9
dc.format.extent2998-3006
dc.identifierhttp://dx.doi.org/10.1007/s11665-017-2724-5
dc.identifier.citationJournal Of Materials Engineering And Performance. New York, v. 26, n. 6, p. 2998-3006, 2017.
dc.identifier.doi10.1007/s11665-017-2724-5
dc.identifier.issn1059-9495
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/54378
dc.identifier.wosWOS:000402734000055
dc.language.isoeng
dc.publisherSpringer
dc.relation.ispartofJournal Of Materials Engineering And Performance
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectaluminum matrix compositeen
dc.subjectcarbon nanotubesen
dc.subjecthigh-energy ball millingen
dc.subjectmechanical propertiesen
dc.titleCarbon Nanotube-Reinforced Aluminum Matrix Composites Produced by High-Energy Ball Millingen
dc.typeinfo:eu-repo/semantics/article
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