Microstructure and mechanical properties of GTAW welded joints of AA6105 aluminum alloy

Gas Tungsten Arc Welding (GTAW) is one of the most used methods to weld aluminum. This work investigates the influence of welding parameters on the microstructure and mechanical properties of GTAW welded AA6105 aluminum alloy joints. AA6105 alloy plates with different percent values of cold work wer...

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Autores:
Tipo de recurso:
Fecha de publicación:
2016
Institución:
Universidad Pedagógica y Tecnológica de Colombia
Repositorio:
RiUPTC: Repositorio Institucional UPTC
Idioma:
eng
OAI Identifier:
oai:repositorio.uptc.edu.co:001/14151
Acceso en línea:
https://revistas.uptc.edu.co/index.php/ingenieria/article/view/5293
https://repositorio.uptc.edu.co/handle/001/14151
Palabra clave:
AA6105
cold work
GTAW
secondary phase
ultimate tensile strength
welding current
welding speed
weld bead hardness
AA6105
corriente de soldadura
GTAW
resistencia a la tensión
soldadura de aluminio
velocidad de soldadura
Rights
License
http://purl.org/coar/access_right/c_abf123
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spelling 2016-09-012024-07-05T19:11:29Z2024-07-05T19:11:29Zhttps://revistas.uptc.edu.co/index.php/ingenieria/article/view/529310.19053/01211129.v25.n43.2016.5293https://repositorio.uptc.edu.co/handle/001/14151Gas Tungsten Arc Welding (GTAW) is one of the most used methods to weld aluminum. This work investigates the influence of welding parameters on the microstructure and mechanical properties of GTAW welded AA6105 aluminum alloy joints. AA6105 alloy plates with different percent values of cold work were joined by GTAW, using various combinations of welding current and speed. The fusion zone, in which the effects of cold work have disappeared, and the heat affected zone of the welded samples were examined under optical and scanning electron microscopes, additionally, mechanical tests and measures of Vickers microhardness were performed. Results showed dendritic morphology with solute micro- and macrosegregation in the fusion zone, which is favored by the constitutional supercooling when heat input increases. When heat input increased and welding speed increased or remained constant, greater segregation was obtained, whereas welding speed decrease produced a coarser microstructure. In the heat affected zone recrystallization, dissolution, and coarsening of precipitates occurred, which led to variations in hardness and strength.La soldadura con arco de tungsteno y gas (GTAW, sigla en inglés) es uno de los métodos más usados para soldar aluminio. En el presente trabajo se estudió la influencia de la corriente y la velocidad de soldadura en la microestructura y las propiedades mecánicas de la zona afectada por el calor de juntas de láminas de aluminio AA6105 con diferentes porcentajes de trabajo en frío soldadas por GTAW. También se evaluaron los cambios microestructurales en la zona de fusión, donde desaparece todo el historial del trabajo en frío. Las muestras fueron examinadas con microscopía óptica y electrónica de barrido, se realizaron ensayos de tracción y mediciones de dureza Vickers. En la zona de fusión se obtuvo una morfología dendrítica, con micro y macrosegregación de soluto, lo cual es favorecido por el superenfriamiento constitucional. Cuando aumentaron el calor aportado y la velocidad de soldadura, o esta última se mantuvo constante, fue mayor la segregación de soluto, mientras que con una disminución de la velocidad de soldadura la microestructura obtenida fue más gruesa. En la zona afectada por el calor se produjo recristalización, disolución o engrosamiento de precipitados, que originaron variaciones en la dureza y la resistencia máxima a tracción.application/pdftext/htmlengengUniversidad Pedagógica y Tecnológica de Colombiahttps://revistas.uptc.edu.co/index.php/ingenieria/article/view/5293/4432https://revistas.uptc.edu.co/index.php/ingenieria/article/view/5293/5058Revista Facultad de Ingeniería; Vol. 25 No. 43 (2016); 7-19Revista Facultad de Ingeniería; Vol. 25 Núm. 43 (2016); 7-192357-53280121-1129AA6105cold workGTAWsecondary phaseultimate tensile strengthwelding currentwelding speedweld bead hardnessAA6105corriente de soldaduraGTAWresistencia a la tensiónsoldadura de aluminiovelocidad de soldaduraMicrostructure and mechanical properties of GTAW welded joints of AA6105 aluminum alloyMicroestructura y propiedades mecánicas de la soldadura GTAW de aluminio AA6105investigationinvestigacióninfo:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_2df8fbb1info:eu-repo/semantics/publishedVersionhttp://purl.org/coar/version/c_970fb48d4fbd8a206http://purl.org/coar/version/c_970fb48d4fbd8a85http://purl.org/coar/access_right/c_abf123http://purl.org/coar/access_right/c_abf2Dorta-Almenara, MinervaCapace, María Cristina001/14151oai:repositorio.uptc.edu.co:001/141512025-07-18 11:53:37.401metadata.onlyhttps://repositorio.uptc.edu.coRepositorio Institucional UPTCrepositorio.uptc@uptc.edu.co
dc.title.en-US.fl_str_mv Microstructure and mechanical properties of GTAW welded joints of AA6105 aluminum alloy
dc.title.es-ES.fl_str_mv Microestructura y propiedades mecánicas de la soldadura GTAW de aluminio AA6105
title Microstructure and mechanical properties of GTAW welded joints of AA6105 aluminum alloy
spellingShingle Microstructure and mechanical properties of GTAW welded joints of AA6105 aluminum alloy
AA6105
cold work
GTAW
secondary phase
ultimate tensile strength
welding current
welding speed
weld bead hardness
AA6105
corriente de soldadura
GTAW
resistencia a la tensión
soldadura de aluminio
velocidad de soldadura
title_short Microstructure and mechanical properties of GTAW welded joints of AA6105 aluminum alloy
title_full Microstructure and mechanical properties of GTAW welded joints of AA6105 aluminum alloy
title_fullStr Microstructure and mechanical properties of GTAW welded joints of AA6105 aluminum alloy
title_full_unstemmed Microstructure and mechanical properties of GTAW welded joints of AA6105 aluminum alloy
title_sort Microstructure and mechanical properties of GTAW welded joints of AA6105 aluminum alloy
dc.subject.en-US.fl_str_mv AA6105
cold work
GTAW
secondary phase
ultimate tensile strength
welding current
welding speed
weld bead hardness
topic AA6105
cold work
GTAW
secondary phase
ultimate tensile strength
welding current
welding speed
weld bead hardness
AA6105
corriente de soldadura
GTAW
resistencia a la tensión
soldadura de aluminio
velocidad de soldadura
dc.subject.es-ES.fl_str_mv AA6105
corriente de soldadura
GTAW
resistencia a la tensión
soldadura de aluminio
velocidad de soldadura
description Gas Tungsten Arc Welding (GTAW) is one of the most used methods to weld aluminum. This work investigates the influence of welding parameters on the microstructure and mechanical properties of GTAW welded AA6105 aluminum alloy joints. AA6105 alloy plates with different percent values of cold work were joined by GTAW, using various combinations of welding current and speed. The fusion zone, in which the effects of cold work have disappeared, and the heat affected zone of the welded samples were examined under optical and scanning electron microscopes, additionally, mechanical tests and measures of Vickers microhardness were performed. Results showed dendritic morphology with solute micro- and macrosegregation in the fusion zone, which is favored by the constitutional supercooling when heat input increases. When heat input increased and welding speed increased or remained constant, greater segregation was obtained, whereas welding speed decrease produced a coarser microstructure. In the heat affected zone recrystallization, dissolution, and coarsening of precipitates occurred, which led to variations in hardness and strength.
publishDate 2016
dc.date.accessioned.none.fl_str_mv 2024-07-05T19:11:29Z
dc.date.available.none.fl_str_mv 2024-07-05T19:11:29Z
dc.date.none.fl_str_mv 2016-09-01
dc.type.en-US.fl_str_mv investigation
dc.type.es-ES.fl_str_mv investigación
dc.type.none.fl_str_mv info:eu-repo/semantics/article
dc.type.coar.fl_str_mv http://purl.org/coar/resource_type/c_2df8fbb1
dc.type.coarversion.fl_str_mv http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.version.spa.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.coarversion.spa.fl_str_mv http://purl.org/coar/version/c_970fb48d4fbd8a206
status_str publishedVersion
dc.identifier.none.fl_str_mv https://revistas.uptc.edu.co/index.php/ingenieria/article/view/5293
10.19053/01211129.v25.n43.2016.5293
dc.identifier.uri.none.fl_str_mv https://repositorio.uptc.edu.co/handle/001/14151
url https://revistas.uptc.edu.co/index.php/ingenieria/article/view/5293
https://repositorio.uptc.edu.co/handle/001/14151
identifier_str_mv 10.19053/01211129.v25.n43.2016.5293
dc.language.none.fl_str_mv eng
dc.language.iso.spa.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv https://revistas.uptc.edu.co/index.php/ingenieria/article/view/5293/4432
https://revistas.uptc.edu.co/index.php/ingenieria/article/view/5293/5058
dc.rights.coar.fl_str_mv http://purl.org/coar/access_right/c_abf2
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rights_invalid_str_mv http://purl.org/coar/access_right/c_abf123
http://purl.org/coar/access_right/c_abf2
dc.format.none.fl_str_mv application/pdf
text/html
dc.publisher.en-US.fl_str_mv Universidad Pedagógica y Tecnológica de Colombia
dc.source.en-US.fl_str_mv Revista Facultad de Ingeniería; Vol. 25 No. 43 (2016); 7-19
dc.source.es-ES.fl_str_mv Revista Facultad de Ingeniería; Vol. 25 Núm. 43 (2016); 7-19
dc.source.none.fl_str_mv 2357-5328
0121-1129
institution Universidad Pedagógica y Tecnológica de Colombia
repository.name.fl_str_mv Repositorio Institucional UPTC
repository.mail.fl_str_mv repositorio.uptc@uptc.edu.co
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