Increasing the corrosion resistance in the UNS S32750 super duplex steel welded joints through Hybrid GTAW-Laser Welding and Nitrogen
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/244401 |
Resumo: | The development of techniques to improve the welding of super duplex steels is necessary in order to ensure that the phase balance and properties of the material are not affected during this process. Hybrid arc-laser welding is a perfect combination of the advantages of both processes, producing deeper weld beads with more balanced phases than the pulsed laser process. Here, the objective was to improve the corrosion resistance of UNS S32750 weld beads by increasing the volumetric austenite percentage in the fusion zone (FZ) with a hybrid process of GTAW (gas tungsten arc welding) and pulsed laser Nd-YAG (neodymium-doped yttrium aluminum garnet). Welds were performed in bead on plate conditions with fixed laser parameters and a varying heat input introduced through the GTAW process. Additionally, welds within a nitrogen atmosphere were performed. After base metal characterization, an analysis of the FZ and heat affected zone were performed with optical microscopy, scanning electron microscopy and critical pitting tests (CPT). The synergy between the thermal input provided by the hybrid process and austenite-promoting characteristic of nitrogen led to a balanced volumetric austenite/ferrite fraction. Consequently, the results obtained in CPT tests were better than conventional welding processes, such as laser or GTAW solely. |
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Increasing the corrosion resistance in the UNS S32750 super duplex steel welded joints through Hybrid GTAW-Laser Welding and NitrogenSuperduplexPulsed laserGtawHybrid weldingUNS S32750AusteniteNitrogenWeldingThe development of techniques to improve the welding of super duplex steels is necessary in order to ensure that the phase balance and properties of the material are not affected during this process. Hybrid arc-laser welding is a perfect combination of the advantages of both processes, producing deeper weld beads with more balanced phases than the pulsed laser process. Here, the objective was to improve the corrosion resistance of UNS S32750 weld beads by increasing the volumetric austenite percentage in the fusion zone (FZ) with a hybrid process of GTAW (gas tungsten arc welding) and pulsed laser Nd-YAG (neodymium-doped yttrium aluminum garnet). Welds were performed in bead on plate conditions with fixed laser parameters and a varying heat input introduced through the GTAW process. Additionally, welds within a nitrogen atmosphere were performed. After base metal characterization, an analysis of the FZ and heat affected zone were performed with optical microscopy, scanning electron microscopy and critical pitting tests (CPT). The synergy between the thermal input provided by the hybrid process and austenite-promoting characteristic of nitrogen led to a balanced volumetric austenite/ferrite fraction. Consequently, the results obtained in CPT tests were better than conventional welding processes, such as laser or GTAW solely.Não recebi financiamentoVersão final do editorSão Paulo State University (UNESP)Federal Institute of Education, Science and Technology of Mato GrossoUniversity of PadovaMDPIUniversidade Estadual Paulista (Unesp)Videira, Arthur Moraes eMendes, Willians RibeiroVentrella, Vicente Afonso [UNESP]Calliari, Irene2023-07-05T16:56:27Z2023-07-05T16:56:27Z2023-01-05info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdf1996-1944http://hdl.handle.net/11449/24440110.3390/ma1602054331671717388300870000-0003-0865-5258engMaterialsinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESP2024-07-04T20:06:14Zoai:repositorio.unesp.br:11449/244401Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T18:24:56.823623Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Increasing the corrosion resistance in the UNS S32750 super duplex steel welded joints through Hybrid GTAW-Laser Welding and Nitrogen |
title |
Increasing the corrosion resistance in the UNS S32750 super duplex steel welded joints through Hybrid GTAW-Laser Welding and Nitrogen |
spellingShingle |
Increasing the corrosion resistance in the UNS S32750 super duplex steel welded joints through Hybrid GTAW-Laser Welding and Nitrogen Videira, Arthur Moraes e Superduplex Pulsed laser Gtaw Hybrid welding UNS S32750 Austenite Nitrogen Welding |
title_short |
Increasing the corrosion resistance in the UNS S32750 super duplex steel welded joints through Hybrid GTAW-Laser Welding and Nitrogen |
title_full |
Increasing the corrosion resistance in the UNS S32750 super duplex steel welded joints through Hybrid GTAW-Laser Welding and Nitrogen |
title_fullStr |
Increasing the corrosion resistance in the UNS S32750 super duplex steel welded joints through Hybrid GTAW-Laser Welding and Nitrogen |
title_full_unstemmed |
Increasing the corrosion resistance in the UNS S32750 super duplex steel welded joints through Hybrid GTAW-Laser Welding and Nitrogen |
title_sort |
Increasing the corrosion resistance in the UNS S32750 super duplex steel welded joints through Hybrid GTAW-Laser Welding and Nitrogen |
author |
Videira, Arthur Moraes e |
author_facet |
Videira, Arthur Moraes e Mendes, Willians Ribeiro Ventrella, Vicente Afonso [UNESP] Calliari, Irene |
author_role |
author |
author2 |
Mendes, Willians Ribeiro Ventrella, Vicente Afonso [UNESP] Calliari, Irene |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Videira, Arthur Moraes e Mendes, Willians Ribeiro Ventrella, Vicente Afonso [UNESP] Calliari, Irene |
dc.subject.por.fl_str_mv |
Superduplex Pulsed laser Gtaw Hybrid welding UNS S32750 Austenite Nitrogen Welding |
topic |
Superduplex Pulsed laser Gtaw Hybrid welding UNS S32750 Austenite Nitrogen Welding |
description |
The development of techniques to improve the welding of super duplex steels is necessary in order to ensure that the phase balance and properties of the material are not affected during this process. Hybrid arc-laser welding is a perfect combination of the advantages of both processes, producing deeper weld beads with more balanced phases than the pulsed laser process. Here, the objective was to improve the corrosion resistance of UNS S32750 weld beads by increasing the volumetric austenite percentage in the fusion zone (FZ) with a hybrid process of GTAW (gas tungsten arc welding) and pulsed laser Nd-YAG (neodymium-doped yttrium aluminum garnet). Welds were performed in bead on plate conditions with fixed laser parameters and a varying heat input introduced through the GTAW process. Additionally, welds within a nitrogen atmosphere were performed. After base metal characterization, an analysis of the FZ and heat affected zone were performed with optical microscopy, scanning electron microscopy and critical pitting tests (CPT). The synergy between the thermal input provided by the hybrid process and austenite-promoting characteristic of nitrogen led to a balanced volumetric austenite/ferrite fraction. Consequently, the results obtained in CPT tests were better than conventional welding processes, such as laser or GTAW solely. |
publishDate |
2023 |
dc.date.none.fl_str_mv |
2023-07-05T16:56:27Z 2023-07-05T16:56:27Z 2023-01-05 |
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 |
1996-1944 http://hdl.handle.net/11449/244401 10.3390/ma16020543 3167171738830087 0000-0003-0865-5258 |
identifier_str_mv |
1996-1944 10.3390/ma16020543 3167171738830087 0000-0003-0865-5258 |
url |
http://hdl.handle.net/11449/244401 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Materials |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
MDPI |
publisher.none.fl_str_mv |
MDPI |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808128928951304192 |