Superplastic Behavior of Overaged 2024 Aluminum Alloy after Friction Stir Processing

A commercial 2024 aluminum alloy was heat treated at 280 °C for 48 h and then slow cooled in a furnace to obtain minimum hardness. This material was then friction stir processed (FSP) using three sets of processing conditions. To study the effect of the processing on the microstructure and the high...

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Autores: Orozco-Caballero, A., Álvarez Leal, Marta, Carreño, Fernando, Ruano, Oscar Antonio
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/287230
Acceso en línea:http://hdl.handle.net/10261/287230
Access Level:acceso abierto
Palabra clave:Aluminum alloy
Friction stir processing
Mechanical properties
Creep behavior
Superplasticity
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spelling Superplastic Behavior of Overaged 2024 Aluminum Alloy after Friction Stir ProcessingOrozco-Caballero, A.Álvarez Leal, MartaCarreño, FernandoRuano, Oscar AntonioAluminum alloyFriction stir processingMechanical propertiesCreep behaviorSuperplasticityA commercial 2024 aluminum alloy was heat treated at 280 °C for 48 h and then slow cooled in a furnace to obtain minimum hardness. This material was then friction stir processed (FSP) using three sets of processing conditions. To study the effect of the processing on the microstructure and the high temperature mechanical properties, the materials were tested in tension at an initial strain rate of 10¿2 s¿1 and temperature range 200 to 450 °C. Processing severity was selected as the main factor for obtaining fine grain sizes right after FSP. The grain size was enormously reduced from about 50 µm to 1 µm. This grain reduction gave rise to very high elongations to failure of about 400%. Strain¿rate-change tests showed a stress exponent close to 2 at intermediate strain rates, which was related to grain boundary sliding as the controlling deformation mechanism and to su- perplasticity, which is strongly grain-size dependent. A possible controlling deformation mechanism by solute-drag creep, as proposed by other authors, was disregarded since tests conducted at 450 °C, where the microstructure of the FSP materials coarsens rapidly, gave a low elongation to failure and high resistance, which showed the importance of the grain size dependence of the operative deformation mechanism at 250¿400 °C, which was only compatible with grain boundary sliding.Financial support from MINECO (Spain), Project MAT2015-68919-C3-1-R (MINECO/FEDER) is gratefully acknowledged. Funding from project PID2020-118626RB-I00 awarded by MCIN/AEI/10.13039/501100011033 is also acknowledged.Multidisciplinary Digital Publishing InstituteMinisterio de Economía y Competitividad (España)Ministerio de Ciencia e Innovación (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2023202320222023info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/287230reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO//MAT2015-68919-C3-1-Rinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-118626RB-I00https://doi.org/10.3390/met12111880Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2872302026-05-22T06:33:51Z
dc.title.none.fl_str_mv Superplastic Behavior of Overaged 2024 Aluminum Alloy after Friction Stir Processing
title Superplastic Behavior of Overaged 2024 Aluminum Alloy after Friction Stir Processing
spellingShingle Superplastic Behavior of Overaged 2024 Aluminum Alloy after Friction Stir Processing
Orozco-Caballero, A.
Aluminum alloy
Friction stir processing
Mechanical properties
Creep behavior
Superplasticity
title_short Superplastic Behavior of Overaged 2024 Aluminum Alloy after Friction Stir Processing
title_full Superplastic Behavior of Overaged 2024 Aluminum Alloy after Friction Stir Processing
title_fullStr Superplastic Behavior of Overaged 2024 Aluminum Alloy after Friction Stir Processing
title_full_unstemmed Superplastic Behavior of Overaged 2024 Aluminum Alloy after Friction Stir Processing
title_sort Superplastic Behavior of Overaged 2024 Aluminum Alloy after Friction Stir Processing
dc.creator.none.fl_str_mv Orozco-Caballero, A.
Álvarez Leal, Marta
Carreño, Fernando
Ruano, Oscar Antonio
author Orozco-Caballero, A.
author_facet Orozco-Caballero, A.
Álvarez Leal, Marta
Carreño, Fernando
Ruano, Oscar Antonio
author_role author
author2 Álvarez Leal, Marta
Carreño, Fernando
Ruano, Oscar Antonio
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Ministerio de Ciencia e Innovación (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Aluminum alloy
Friction stir processing
Mechanical properties
Creep behavior
Superplasticity
topic Aluminum alloy
Friction stir processing
Mechanical properties
Creep behavior
Superplasticity
description A commercial 2024 aluminum alloy was heat treated at 280 °C for 48 h and then slow cooled in a furnace to obtain minimum hardness. This material was then friction stir processed (FSP) using three sets of processing conditions. To study the effect of the processing on the microstructure and the high temperature mechanical properties, the materials were tested in tension at an initial strain rate of 10¿2 s¿1 and temperature range 200 to 450 °C. Processing severity was selected as the main factor for obtaining fine grain sizes right after FSP. The grain size was enormously reduced from about 50 µm to 1 µm. This grain reduction gave rise to very high elongations to failure of about 400%. Strain¿rate-change tests showed a stress exponent close to 2 at intermediate strain rates, which was related to grain boundary sliding as the controlling deformation mechanism and to su- perplasticity, which is strongly grain-size dependent. A possible controlling deformation mechanism by solute-drag creep, as proposed by other authors, was disregarded since tests conducted at 450 °C, where the microstructure of the FSP materials coarsens rapidly, gave a low elongation to failure and high resistance, which showed the importance of the grain size dependence of the operative deformation mechanism at 250¿400 °C, which was only compatible with grain boundary sliding.
publishDate 2022
dc.date.none.fl_str_mv 2022
2023
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/287230
url http://hdl.handle.net/10261/287230
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
#PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO//MAT2015-68919-C3-1-R
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-118626RB-I00
https://doi.org/10.3390/met12111880
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
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
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