Evolution of the microstructure, texture and creep properties of the 7075 aluminium alloy during hot accumulative roll bonding

The 7075 Al alloy was severely deformed at 350 °C by a 3:1 thickness reduction per pass accumulative roll bonding (ARB) process up to six passes. It was found that discontinuous recrystallisation occurs during the inter-pass annealing stages from the third pass on, attributable to the increment of t...

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Autores: Hidalgo-Manrique, P., Cepeda-Jiménez, C.M., Orozco-Caballero, A., Ruano, Oscar Antonio, Carreño, Fernando
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2014
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/110234
Acceso en línea:http://hdl.handle.net/10261/110234
Access Level:acceso abierto
Palabra clave:Accumulative roll bonding
7075 Aluminium alloy
Discontinuous recrystallisation
Zener drag
Grain boundary sliding
Superplasticity
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spelling Evolution of the microstructure, texture and creep properties of the 7075 aluminium alloy during hot accumulative roll bondingHidalgo-Manrique, P.Cepeda-Jiménez, C.M.Orozco-Caballero, A.Ruano, Oscar AntonioCarreño, FernandoAccumulative roll bonding7075 Aluminium alloyDiscontinuous recrystallisationZener dragGrain boundary slidingSuperplasticityThe 7075 Al alloy was severely deformed at 350 °C by a 3:1 thickness reduction per pass accumulative roll bonding (ARB) process up to six passes. It was found that discontinuous recrystallisation occurs during the inter-pass annealing stages from the third pass on, attributable to the increment of the mean particle size during processing. As a consequence, the mean crystallite size did not decrease, but remained approximately constant at 440 nm along the present ARB process and the mean boundary misorientation angle reached a maximum of 30° for the 3-passes sample. However, since nucleation of new grains takes place at the pre-existing grain boundaries, discontinuous recrystallisation results in slight changes in texture throughout the processing, being the orientations in the ARBed samples predominantly located along the typical rolling β-fibre. Uniaxial tests conducted at 300 °C and 350 °C revealed that the operating deformation mechanism in the processed alloy at such temperatures was grain boundary sliding; the optimum superplastic strain rate being 3×10−3–10−2 s−1. Boundary misorientation and thermal stability are the two main factors that contribute to high elongations to failureFinancial support from the CICYT (Projects MAT2009-14452 and MAT2012-38962)Peer reviewedElsevierConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]201520152014info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/110234reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.msea.2014.03.105Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1102342026-05-22T06:33:51Z
dc.title.none.fl_str_mv Evolution of the microstructure, texture and creep properties of the 7075 aluminium alloy during hot accumulative roll bonding
title Evolution of the microstructure, texture and creep properties of the 7075 aluminium alloy during hot accumulative roll bonding
spellingShingle Evolution of the microstructure, texture and creep properties of the 7075 aluminium alloy during hot accumulative roll bonding
Hidalgo-Manrique, P.
Accumulative roll bonding
7075 Aluminium alloy
Discontinuous recrystallisation
Zener drag
Grain boundary sliding
Superplasticity
title_short Evolution of the microstructure, texture and creep properties of the 7075 aluminium alloy during hot accumulative roll bonding
title_full Evolution of the microstructure, texture and creep properties of the 7075 aluminium alloy during hot accumulative roll bonding
title_fullStr Evolution of the microstructure, texture and creep properties of the 7075 aluminium alloy during hot accumulative roll bonding
title_full_unstemmed Evolution of the microstructure, texture and creep properties of the 7075 aluminium alloy during hot accumulative roll bonding
title_sort Evolution of the microstructure, texture and creep properties of the 7075 aluminium alloy during hot accumulative roll bonding
dc.creator.none.fl_str_mv Hidalgo-Manrique, P.
Cepeda-Jiménez, C.M.
Orozco-Caballero, A.
Ruano, Oscar Antonio
Carreño, Fernando
author Hidalgo-Manrique, P.
author_facet Hidalgo-Manrique, P.
Cepeda-Jiménez, C.M.
Orozco-Caballero, A.
Ruano, Oscar Antonio
Carreño, Fernando
author_role author
author2 Cepeda-Jiménez, C.M.
Orozco-Caballero, A.
Ruano, Oscar Antonio
Carreño, Fernando
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Accumulative roll bonding
7075 Aluminium alloy
Discontinuous recrystallisation
Zener drag
Grain boundary sliding
Superplasticity
topic Accumulative roll bonding
7075 Aluminium alloy
Discontinuous recrystallisation
Zener drag
Grain boundary sliding
Superplasticity
description The 7075 Al alloy was severely deformed at 350 °C by a 3:1 thickness reduction per pass accumulative roll bonding (ARB) process up to six passes. It was found that discontinuous recrystallisation occurs during the inter-pass annealing stages from the third pass on, attributable to the increment of the mean particle size during processing. As a consequence, the mean crystallite size did not decrease, but remained approximately constant at 440 nm along the present ARB process and the mean boundary misorientation angle reached a maximum of 30° for the 3-passes sample. However, since nucleation of new grains takes place at the pre-existing grain boundaries, discontinuous recrystallisation results in slight changes in texture throughout the processing, being the orientations in the ARBed samples predominantly located along the typical rolling β-fibre. Uniaxial tests conducted at 300 °C and 350 °C revealed that the operating deformation mechanism in the processed alloy at such temperatures was grain boundary sliding; the optimum superplastic strain rate being 3×10−3–10−2 s−1. Boundary misorientation and thermal stability are the two main factors that contribute to high elongations to failure
publishDate 2014
dc.date.none.fl_str_mv 2014
2015
2015
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/110234
url http://hdl.handle.net/10261/110234
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.msea.2014.03.105
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,81155

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