High Strength AA7050 Al alloy processed by ECAP: Microstructure and mechanical properties

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dc.contributor.authorCardoso, K. R. [UNIFESP]
dc.contributor.authorTravessa, D. N. [UNIFESP]
dc.contributor.authorBotta, W. J.
dc.contributor.authorJorge, A. M.
dc.contributor.institutionUniversidade Federal de São Paulo (UNIFESP)
dc.contributor.institutionUniv Vale do Paraiba
dc.contributor.institutionUniversidade Federal de São Carlos (UFSCar)
dc.date.accessioned2016-01-24T14:17:00Z
dc.date.available2016-01-24T14:17:00Z
dc.date.issued2011-07-15
dc.description.abstractCommercial AA7050 aluminium alloy in the solution heat-treated condition was processed by ECAP through routes A and B-C. Samples were processed in both room temperature and 150 degrees C, with 1, 3, and 6 passes. the resulting microstructure was evaluated by optical microscopy (OM) and transmission electron microscopy (TEM). Only one pass was possible at room temperature due to the low ductility of the alloy under this condition. in all cases, the microstructure was refined by the formation of deformation bands, with dislocation cells and subgrains inside these bands. the increase of the ECAP temperature led to the formation of more defined subgrain boundaries and intense precipitation of spherical-like particles, identified as eta' and eta phases. After the first pass, an increase in the hardness was observed, when compared with the initial condition. After 3 passes the hardness reached a maximum value, higher than the values typically observed for this alloy in the overaged condition. the samples processed by route B-C evolved to a more refined microstructure. ECAP also resulted in significant strength improvement, compared to the alloy in the commercial overaged condition. (C) 2011 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniversidade Federal de São Paulo, DCT, BR-12231280 São Paulo, Brazil
dc.description.affiliationUniv Vale do Paraiba, Inst Pesquisa & Desenvolvimento, BR-12244000 São Paulo, Brazil
dc.description.affiliationUniv Fed Sao Carlos, Dept Mat Engn, BR-13565905 São Paulo, Brazil
dc.description.affiliationUnifespUniversidade Federal de São Paulo, DCT, BR-12231280 São Paulo, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIDFAPESP: 2005/03440-5
dc.format.extent5804-5811
dc.identifierhttp://dx.doi.org/10.1016/j.msea.2011.04.007
dc.identifier.citationMaterials Science and Engineering A-structural Materials Properties Microstructure and Processing. Lausanne: Elsevier Science Sa, v. 528, n. 18, p. 5804-5811, 2011.
dc.identifier.doi10.1016/j.msea.2011.04.007
dc.identifier.issn0921-5093
dc.identifier.urihttp://repositorio.unifesp.br/handle/11600/33888
dc.identifier.wosWOS:000292170200023
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofMaterials Science and Engineering A-structural Materials Properties Microstructure and Processing
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.rights.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.subjectAluminium alloyen
dc.subjectECAPen
dc.subjectMicrostructureen
dc.subjectMechanical propertiesen
dc.titleHigh Strength AA7050 Al alloy processed by ECAP: Microstructure and mechanical propertiesen
dc.typeinfo:eu-repo/semantics/article
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