Analysis of the unstressed lattice spacing, d0, for the determination of the residual stress in a friction stir welded plate of an age-hardenable aluminum alloy - Use of equilibrium conditions and a genetic algorithm

Procedures based on equilibrium conditions (stress and bending moment) have been used to obtain an unstressed lattice spacing, d0, as a crucial requirement for calculating the residual stress (RS) profile across a joint conducted on a 10 mm thick plate of age-hardenable AA2024 alloy by friction stir...

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Autores: Cioffi, Florencia, Hidalgo, J.I., Fernández, Ricardo, Pirling, T., Fernández, B., Gesto, D., Puente-Orench, Inés, Rey, Pilar, González-Doncel, Gaspar
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:10261/111305
Acceso en línea:http://hdl.handle.net/10261/111305
Access Level:acceso abierto
Palabra clave:Aluminum alloys
Friction stir welding (FSW)
Neutron diffraction
Genetic algorithms
Residual stress
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spelling Analysis of the unstressed lattice spacing, d0, for the determination of the residual stress in a friction stir welded plate of an age-hardenable aluminum alloy - Use of equilibrium conditions and a genetic algorithmCioffi, FlorenciaHidalgo, J.I.Fernández, RicardoPirling, T.Fernández, B.Gesto, D.Puente-Orench, InésRey, PilarGonzález-Doncel, GasparAluminum alloysFriction stir welding (FSW)Neutron diffractionGenetic algorithmsResidual stressProcedures based on equilibrium conditions (stress and bending moment) have been used to obtain an unstressed lattice spacing, d0, as a crucial requirement for calculating the residual stress (RS) profile across a joint conducted on a 10 mm thick plate of age-hardenable AA2024 alloy by friction stir welding (FSW). Two procedures have been used that take advantage of neutron diffraction measurements. First, equilibrium conditions were imposed on sections parallel to the weld so that a constant d0 value corresponding to the base material region could be calculated analytically. Second, balance conditions were imposed on a section transverse to the weld. Then, using the data and a genetic algorithm, suitable d0 values for the different regions of the weld have been found. For several reasons, the comb method has proved to be inappropriate for RS determination in the case of age-hardenable alloys. However, the equilibrium conditions, together with the genetic algorithm, has been shown to be very suitable for determining RS profiles in FSW joints of these alloys, where inherent microstructural variations of d 0 across the weld are expected. © Published by Elsevier Ltd. All rights reserved.Support from Projects MAT-05-0527 and MAT-09-09545 from MICINN, and PIE 200960I076 from C.S.I.C., Spain, is gratefully acknowledged. Financial help from the ILL to conduct the neutron diffraction measurements on SALSA, experiments 1-02-6 and 1-02-10, is recognized. Support from Spanish Government Grants TIN 2008-00508 and MEC CONSOLIDER CSD00C-07-20811 and from Spanish MINECO (projects MAT2011-23455 and MAT2011-25991) is also acknowledged by J.I.H. and I.P.O., respectively.Peer ReviewedElsevierMinisterio de Ciencia e Innovación (España)Ministerio de Economía y Competitividad (España)Consejo Superior de Investigaciones Científicas (España)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2015201520142015info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/111305reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.actamat.2014.04.035Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1113052026-05-22T06:33:51Z
dc.title.none.fl_str_mv Analysis of the unstressed lattice spacing, d0, for the determination of the residual stress in a friction stir welded plate of an age-hardenable aluminum alloy - Use of equilibrium conditions and a genetic algorithm
title Analysis of the unstressed lattice spacing, d0, for the determination of the residual stress in a friction stir welded plate of an age-hardenable aluminum alloy - Use of equilibrium conditions and a genetic algorithm
spellingShingle Analysis of the unstressed lattice spacing, d0, for the determination of the residual stress in a friction stir welded plate of an age-hardenable aluminum alloy - Use of equilibrium conditions and a genetic algorithm
Cioffi, Florencia
Aluminum alloys
Friction stir welding (FSW)
Neutron diffraction
Genetic algorithms
Residual stress
title_short Analysis of the unstressed lattice spacing, d0, for the determination of the residual stress in a friction stir welded plate of an age-hardenable aluminum alloy - Use of equilibrium conditions and a genetic algorithm
title_full Analysis of the unstressed lattice spacing, d0, for the determination of the residual stress in a friction stir welded plate of an age-hardenable aluminum alloy - Use of equilibrium conditions and a genetic algorithm
title_fullStr Analysis of the unstressed lattice spacing, d0, for the determination of the residual stress in a friction stir welded plate of an age-hardenable aluminum alloy - Use of equilibrium conditions and a genetic algorithm
title_full_unstemmed Analysis of the unstressed lattice spacing, d0, for the determination of the residual stress in a friction stir welded plate of an age-hardenable aluminum alloy - Use of equilibrium conditions and a genetic algorithm
title_sort Analysis of the unstressed lattice spacing, d0, for the determination of the residual stress in a friction stir welded plate of an age-hardenable aluminum alloy - Use of equilibrium conditions and a genetic algorithm
dc.creator.none.fl_str_mv Cioffi, Florencia
Hidalgo, J.I.
Fernández, Ricardo
Pirling, T.
Fernández, B.
Gesto, D.
Puente-Orench, Inés
Rey, Pilar
González-Doncel, Gaspar
author Cioffi, Florencia
author_facet Cioffi, Florencia
Hidalgo, J.I.
Fernández, Ricardo
Pirling, T.
Fernández, B.
Gesto, D.
Puente-Orench, Inés
Rey, Pilar
González-Doncel, Gaspar
author_role author
author2 Hidalgo, J.I.
Fernández, Ricardo
Pirling, T.
Fernández, B.
Gesto, D.
Puente-Orench, Inés
Rey, Pilar
González-Doncel, Gaspar
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación (España)
Ministerio de Economía y Competitividad (España)
Consejo Superior de Investigaciones Científicas (España)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Aluminum alloys
Friction stir welding (FSW)
Neutron diffraction
Genetic algorithms
Residual stress
topic Aluminum alloys
Friction stir welding (FSW)
Neutron diffraction
Genetic algorithms
Residual stress
description Procedures based on equilibrium conditions (stress and bending moment) have been used to obtain an unstressed lattice spacing, d0, as a crucial requirement for calculating the residual stress (RS) profile across a joint conducted on a 10 mm thick plate of age-hardenable AA2024 alloy by friction stir welding (FSW). Two procedures have been used that take advantage of neutron diffraction measurements. First, equilibrium conditions were imposed on sections parallel to the weld so that a constant d0 value corresponding to the base material region could be calculated analytically. Second, balance conditions were imposed on a section transverse to the weld. Then, using the data and a genetic algorithm, suitable d0 values for the different regions of the weld have been found. For several reasons, the comb method has proved to be inappropriate for RS determination in the case of age-hardenable alloys. However, the equilibrium conditions, together with the genetic algorithm, has been shown to be very suitable for determining RS profiles in FSW joints of these alloys, where inherent microstructural variations of d 0 across the weld are expected. © Published by Elsevier Ltd. All rights reserved.
publishDate 2014
dc.date.none.fl_str_mv 2014
2015
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/10261/111305
url http://hdl.handle.net/10261/111305
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.actamat.2014.04.035
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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