Comportamiento frente a la corrosión de uniones soldadas por fricción agitación de AA7075-T651: Evaluación galvánica

Autores
Pérez, Héctor; Tufaro, Leonardo Nicolás; Berardo, Liliana; Svoboda, Hernán Gabriel
Año de publicación
2018
Idioma
español castellano
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Friction Stir Welding (FSW) is a novel solid-phase welding process, which has proved to have a great potential for the realization of welded joints in materials with poor weldability such as heat-treatable aluminum alloys. The aerospace industry has incorporated this process for the manufacture of structural elements, using known high strength alloys such as AA7075 or AA2024. During FSW, different areas are formed due to the thermomechanical cycle applied, which have been named: the stirred zone (WN), the thermo-mechanically affected zone (TMAZ) and the heat affected zone (HAZ). Each zone presents different metallurgical characteristics, so the corrosion resistance could be affected. This is a relevant aspect for multiple applications and the implications are still not clear. The aim of this work was to study the corrosion behavior of FSWed joints on AA7075-T651. For this purpose, samples of 150x150 mm have been welded with a rotation speed of 680 rpm and two welding speeds: 51 and 206 cm/min. A microstructural characterization of the different zones of the welds was carried out, and the galvanic behavior of the specimens was analyzed through inmersion tests in a solution of 3,5% NaCl without oxygen removal; and agar gel test, by contacting the specimen with a gel membrane prepared with 3% agar, 3.5% NaCl and pH universal indicator solution. Samples for macro and microstructural characterization were extracted. The results showed the presence of a localized attack at the TMAZ-hot HAZ interface. The characterization through SEM indicated a major intergranular attack, with the coalescence of several attacks. In turn, preponderance in the attack was observed on the retreating side of the weld.
Fil: Pérez, Héctor. Instituto Nacional de Tecnología Industrial; Argentina
Fil: Tufaro, Leonardo Nicolás. Instituto Nacional de Tecnología Industrial; Argentina
Fil: Berardo, Liliana. Instituto Nacional de Tecnología Industrial; Argentina
Fil: Svoboda, Hernán Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; Argentina
Materia
CORROSION
FSW
GALVANIC
WELD
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/88096
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Comportamiento frente a la corrosión de uniones soldadas por fricción agitación de AA7075-T651: Evaluación galvánicaCorrosion behavior of friction stir welds on aa7075-t651:Galvanic evaluationPérez, HéctorTufaro, Leonardo NicolásBerardo, LilianaSvoboda, Hernán GabrielCORROSIONFSWGALVANICWELDhttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2Friction Stir Welding (FSW) is a novel solid-phase welding process, which has proved to have a great potential for the realization of welded joints in materials with poor weldability such as heat-treatable aluminum alloys. The aerospace industry has incorporated this process for the manufacture of structural elements, using known high strength alloys such as AA7075 or AA2024. During FSW, different areas are formed due to the thermomechanical cycle applied, which have been named: the stirred zone (WN), the thermo-mechanically affected zone (TMAZ) and the heat affected zone (HAZ). Each zone presents different metallurgical characteristics, so the corrosion resistance could be affected. This is a relevant aspect for multiple applications and the implications are still not clear. The aim of this work was to study the corrosion behavior of FSWed joints on AA7075-T651. For this purpose, samples of 150x150 mm have been welded with a rotation speed of 680 rpm and two welding speeds: 51 and 206 cm/min. A microstructural characterization of the different zones of the welds was carried out, and the galvanic behavior of the specimens was analyzed through inmersion tests in a solution of 3,5% NaCl without oxygen removal; and agar gel test, by contacting the specimen with a gel membrane prepared with 3% agar, 3.5% NaCl and pH universal indicator solution. Samples for macro and microstructural characterization were extracted. The results showed the presence of a localized attack at the TMAZ-hot HAZ interface. The characterization through SEM indicated a major intergranular attack, with the coalescence of several attacks. In turn, preponderance in the attack was observed on the retreating side of the weld.Fil: Pérez, Héctor. Instituto Nacional de Tecnología Industrial; ArgentinaFil: Tufaro, Leonardo Nicolás. Instituto Nacional de Tecnología Industrial; ArgentinaFil: Berardo, Liliana. Instituto Nacional de Tecnología Industrial; ArgentinaFil: Svoboda, Hernán Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; ArgentinaRede Latino-Americana de Materiais2018-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/88096Pérez, Héctor; Tufaro, Leonardo Nicolás; Berardo, Liliana; Svoboda, Hernán Gabriel; Comportamiento frente a la corrosión de uniones soldadas por fricción agitación de AA7075-T651: Evaluación galvánica; Rede Latino-Americana de Materiais; Matéria; 23; 2; 4-2018; 1-121517-7076CONICET DigitalCONICETspainfo:eu-repo/semantics/altIdentifier/doi/10.1590/S1517-707620180002.0389info:eu-repo/semantics/altIdentifier/url/http://ref.scielo.org/vby7vjinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:03:31Zoai:ri.conicet.gov.ar:11336/88096instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:03:32.051CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Comportamiento frente a la corrosión de uniones soldadas por fricción agitación de AA7075-T651: Evaluación galvánica
Corrosion behavior of friction stir welds on aa7075-t651:Galvanic evaluation
title Comportamiento frente a la corrosión de uniones soldadas por fricción agitación de AA7075-T651: Evaluación galvánica
spellingShingle Comportamiento frente a la corrosión de uniones soldadas por fricción agitación de AA7075-T651: Evaluación galvánica
Pérez, Héctor
CORROSION
FSW
GALVANIC
WELD
title_short Comportamiento frente a la corrosión de uniones soldadas por fricción agitación de AA7075-T651: Evaluación galvánica
title_full Comportamiento frente a la corrosión de uniones soldadas por fricción agitación de AA7075-T651: Evaluación galvánica
title_fullStr Comportamiento frente a la corrosión de uniones soldadas por fricción agitación de AA7075-T651: Evaluación galvánica
title_full_unstemmed Comportamiento frente a la corrosión de uniones soldadas por fricción agitación de AA7075-T651: Evaluación galvánica
title_sort Comportamiento frente a la corrosión de uniones soldadas por fricción agitación de AA7075-T651: Evaluación galvánica
dc.creator.none.fl_str_mv Pérez, Héctor
Tufaro, Leonardo Nicolás
Berardo, Liliana
Svoboda, Hernán Gabriel
author Pérez, Héctor
author_facet Pérez, Héctor
Tufaro, Leonardo Nicolás
Berardo, Liliana
Svoboda, Hernán Gabriel
author_role author
author2 Tufaro, Leonardo Nicolás
Berardo, Liliana
Svoboda, Hernán Gabriel
author2_role author
author
author
dc.subject.none.fl_str_mv CORROSION
FSW
GALVANIC
WELD
topic CORROSION
FSW
GALVANIC
WELD
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Friction Stir Welding (FSW) is a novel solid-phase welding process, which has proved to have a great potential for the realization of welded joints in materials with poor weldability such as heat-treatable aluminum alloys. The aerospace industry has incorporated this process for the manufacture of structural elements, using known high strength alloys such as AA7075 or AA2024. During FSW, different areas are formed due to the thermomechanical cycle applied, which have been named: the stirred zone (WN), the thermo-mechanically affected zone (TMAZ) and the heat affected zone (HAZ). Each zone presents different metallurgical characteristics, so the corrosion resistance could be affected. This is a relevant aspect for multiple applications and the implications are still not clear. The aim of this work was to study the corrosion behavior of FSWed joints on AA7075-T651. For this purpose, samples of 150x150 mm have been welded with a rotation speed of 680 rpm and two welding speeds: 51 and 206 cm/min. A microstructural characterization of the different zones of the welds was carried out, and the galvanic behavior of the specimens was analyzed through inmersion tests in a solution of 3,5% NaCl without oxygen removal; and agar gel test, by contacting the specimen with a gel membrane prepared with 3% agar, 3.5% NaCl and pH universal indicator solution. Samples for macro and microstructural characterization were extracted. The results showed the presence of a localized attack at the TMAZ-hot HAZ interface. The characterization through SEM indicated a major intergranular attack, with the coalescence of several attacks. In turn, preponderance in the attack was observed on the retreating side of the weld.
Fil: Pérez, Héctor. Instituto Nacional de Tecnología Industrial; Argentina
Fil: Tufaro, Leonardo Nicolás. Instituto Nacional de Tecnología Industrial; Argentina
Fil: Berardo, Liliana. Instituto Nacional de Tecnología Industrial; Argentina
Fil: Svoboda, Hernán Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; Argentina
description Friction Stir Welding (FSW) is a novel solid-phase welding process, which has proved to have a great potential for the realization of welded joints in materials with poor weldability such as heat-treatable aluminum alloys. The aerospace industry has incorporated this process for the manufacture of structural elements, using known high strength alloys such as AA7075 or AA2024. During FSW, different areas are formed due to the thermomechanical cycle applied, which have been named: the stirred zone (WN), the thermo-mechanically affected zone (TMAZ) and the heat affected zone (HAZ). Each zone presents different metallurgical characteristics, so the corrosion resistance could be affected. This is a relevant aspect for multiple applications and the implications are still not clear. The aim of this work was to study the corrosion behavior of FSWed joints on AA7075-T651. For this purpose, samples of 150x150 mm have been welded with a rotation speed of 680 rpm and two welding speeds: 51 and 206 cm/min. A microstructural characterization of the different zones of the welds was carried out, and the galvanic behavior of the specimens was analyzed through inmersion tests in a solution of 3,5% NaCl without oxygen removal; and agar gel test, by contacting the specimen with a gel membrane prepared with 3% agar, 3.5% NaCl and pH universal indicator solution. Samples for macro and microstructural characterization were extracted. The results showed the presence of a localized attack at the TMAZ-hot HAZ interface. The characterization through SEM indicated a major intergranular attack, with the coalescence of several attacks. In turn, preponderance in the attack was observed on the retreating side of the weld.
publishDate 2018
dc.date.none.fl_str_mv 2018-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/88096
Pérez, Héctor; Tufaro, Leonardo Nicolás; Berardo, Liliana; Svoboda, Hernán Gabriel; Comportamiento frente a la corrosión de uniones soldadas por fricción agitación de AA7075-T651: Evaluación galvánica; Rede Latino-Americana de Materiais; Matéria; 23; 2; 4-2018; 1-12
1517-7076
CONICET Digital
CONICET
url http://hdl.handle.net/11336/88096
identifier_str_mv Pérez, Héctor; Tufaro, Leonardo Nicolás; Berardo, Liliana; Svoboda, Hernán Gabriel; Comportamiento frente a la corrosión de uniones soldadas por fricción agitación de AA7075-T651: Evaluación galvánica; Rede Latino-Americana de Materiais; Matéria; 23; 2; 4-2018; 1-12
1517-7076
CONICET Digital
CONICET
dc.language.none.fl_str_mv spa
language spa
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1590/S1517-707620180002.0389
info:eu-repo/semantics/altIdentifier/url/http://ref.scielo.org/vby7vj
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Rede Latino-Americana de Materiais
publisher.none.fl_str_mv Rede Latino-Americana de Materiais
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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