Fatigue behaviour of AA6082-T6 MIG welded butt joints improved by friction stir processing
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/27263 https://doi.org/10.1016/j.matdes.2013.04.026 |
Resumo: | Friction Stir Processing (FSP) was based on the principles of Friction Stir Welding (FSW), a solid-state joining process originally developed for aluminium alloys. It is an emerging metalworking technique which can provide localized modification and control of microstructures in near-surface layers of processed metallic components. In this research, FSP appears as an alternative to traditional methods for fatigue strength improvement of weld joints, such as re-melting, hammering and blasting. This technique was applied on Metal Inert Gas (MIG) butt welds with and without reinforcement, performed on AA6082-T6 alloy plates. The potential benefits of post-processing MIG welds by FSP were studied using microstructure analysis, hardness measurement, tensile strength, residual stress measurement, and fatigue testing. Fatigue tests were carried out under constant amplitude loading with the stress ratio R set to 0. Friction stir processing of MIG welds does not change the hardness and mechanical strength of the weld substantially, but the fatigue strength was increased, due to the geometry modification in the weld toe, reduction of weld defects and grain refinement of the microstructure. |
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Fatigue behaviour of AA6082-T6 MIG welded butt joints improved by friction stir processingFatigue strengthFriction stir processingMetal inert gas weldingAluminium alloyFriction Stir Processing (FSP) was based on the principles of Friction Stir Welding (FSW), a solid-state joining process originally developed for aluminium alloys. It is an emerging metalworking technique which can provide localized modification and control of microstructures in near-surface layers of processed metallic components. In this research, FSP appears as an alternative to traditional methods for fatigue strength improvement of weld joints, such as re-melting, hammering and blasting. This technique was applied on Metal Inert Gas (MIG) butt welds with and without reinforcement, performed on AA6082-T6 alloy plates. The potential benefits of post-processing MIG welds by FSP were studied using microstructure analysis, hardness measurement, tensile strength, residual stress measurement, and fatigue testing. Fatigue tests were carried out under constant amplitude loading with the stress ratio R set to 0. Friction stir processing of MIG welds does not change the hardness and mechanical strength of the weld substantially, but the fatigue strength was increased, due to the geometry modification in the weld toe, reduction of weld defects and grain refinement of the microstructure.Elsevier2013-10info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/27263http://hdl.handle.net/10316/27263https://doi.org/10.1016/j.matdes.2013.04.026engSILVA, J. da [et. al] - Fatigue behaviour of AA6082-T6 MIG welded butt joints improved by friction stir processing. "Materials & Design". ISSN 0261-3069. Vol. 51 (2013) p. 315-3220261-3069http://www.sciencedirect.com/science/article/pii/S0261306913003415Silva, J. daCosta, J. M.Loureiro, A.Ferreira, J. M.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2020-05-25T12:30:02Zoai:estudogeral.uc.pt:10316/27263Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:50:16.590089Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Fatigue behaviour of AA6082-T6 MIG welded butt joints improved by friction stir processing |
title |
Fatigue behaviour of AA6082-T6 MIG welded butt joints improved by friction stir processing |
spellingShingle |
Fatigue behaviour of AA6082-T6 MIG welded butt joints improved by friction stir processing Silva, J. da Fatigue strength Friction stir processing Metal inert gas welding Aluminium alloy |
title_short |
Fatigue behaviour of AA6082-T6 MIG welded butt joints improved by friction stir processing |
title_full |
Fatigue behaviour of AA6082-T6 MIG welded butt joints improved by friction stir processing |
title_fullStr |
Fatigue behaviour of AA6082-T6 MIG welded butt joints improved by friction stir processing |
title_full_unstemmed |
Fatigue behaviour of AA6082-T6 MIG welded butt joints improved by friction stir processing |
title_sort |
Fatigue behaviour of AA6082-T6 MIG welded butt joints improved by friction stir processing |
author |
Silva, J. da |
author_facet |
Silva, J. da Costa, J. M. Loureiro, A. Ferreira, J. M. |
author_role |
author |
author2 |
Costa, J. M. Loureiro, A. Ferreira, J. M. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Silva, J. da Costa, J. M. Loureiro, A. Ferreira, J. M. |
dc.subject.por.fl_str_mv |
Fatigue strength Friction stir processing Metal inert gas welding Aluminium alloy |
topic |
Fatigue strength Friction stir processing Metal inert gas welding Aluminium alloy |
description |
Friction Stir Processing (FSP) was based on the principles of Friction Stir Welding (FSW), a solid-state joining process originally developed for aluminium alloys. It is an emerging metalworking technique which can provide localized modification and control of microstructures in near-surface layers of processed metallic components. In this research, FSP appears as an alternative to traditional methods for fatigue strength improvement of weld joints, such as re-melting, hammering and blasting. This technique was applied on Metal Inert Gas (MIG) butt welds with and without reinforcement, performed on AA6082-T6 alloy plates. The potential benefits of post-processing MIG welds by FSP were studied using microstructure analysis, hardness measurement, tensile strength, residual stress measurement, and fatigue testing. Fatigue tests were carried out under constant amplitude loading with the stress ratio R set to 0. Friction stir processing of MIG welds does not change the hardness and mechanical strength of the weld substantially, but the fatigue strength was increased, due to the geometry modification in the weld toe, reduction of weld defects and grain refinement of the microstructure. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-10 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/27263 http://hdl.handle.net/10316/27263 https://doi.org/10.1016/j.matdes.2013.04.026 |
url |
http://hdl.handle.net/10316/27263 https://doi.org/10.1016/j.matdes.2013.04.026 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
SILVA, J. da [et. al] - Fatigue behaviour of AA6082-T6 MIG welded butt joints improved by friction stir processing. "Materials & Design". ISSN 0261-3069. Vol. 51 (2013) p. 315-322 0261-3069 http://www.sciencedirect.com/science/article/pii/S0261306913003415 |
dc.rights.driver.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:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799133784514232320 |