Nitrogen Addition to the Shielding Gas for Welding Hyper-duplex Stainless Steel

Detalhes bibliográficos
Autor(a) principal: Pimenta,André Rocha
Data de Publicação: 2020
Outros Autores: Diniz,Marilia Garcia, Perez,Geronimo, Solórzano-Naranjo,Ivan Guillermo
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista soldagem & inspeção (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-92242020000100213
Resumo: Abstract: In the present work we have studied the effects of nitrogen addition on the equilibrium of the volume fraction ratio austenite/ferrite and on the structural properties of weldments produced by gas tungsten arc welding (GTAW). The welded joints in tubes UNS S32707 of hyper-duplex steel were produced using argon and nitrogen gas welding, with nitrogen added in ratios of 1.5, 2.5, 3.5, 4.5, and 5.5%. Microstructural characterization of this material under the different processing condition was conducted by means of optical microscopy, scanning electron microscopy, local chemical analysis by X-ray energy dispersive spectroscopy, electron backscatter diffraction Vickers microhardness test, and digital image processing. All welding conditions resulted in welded joints with equiaxial grains microstructure containing austenite both at the boundaries and in the ferrite matrix. Microhardness measurements did not show significant variation in relation to the base metal. The use of welding gases with higher percentages of nitrogen resulted in increases in the austenite volume fraction in the order of 39 to 57% when considering the nitrogen content ranging from 1.5 to 5.5%.
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spelling Nitrogen Addition to the Shielding Gas for Welding Hyper-duplex Stainless SteelHyper-duplex stainless steelGTAWNitrogen additionEBSDMicrostructural characterizationAbstract: In the present work we have studied the effects of nitrogen addition on the equilibrium of the volume fraction ratio austenite/ferrite and on the structural properties of weldments produced by gas tungsten arc welding (GTAW). The welded joints in tubes UNS S32707 of hyper-duplex steel were produced using argon and nitrogen gas welding, with nitrogen added in ratios of 1.5, 2.5, 3.5, 4.5, and 5.5%. Microstructural characterization of this material under the different processing condition was conducted by means of optical microscopy, scanning electron microscopy, local chemical analysis by X-ray energy dispersive spectroscopy, electron backscatter diffraction Vickers microhardness test, and digital image processing. All welding conditions resulted in welded joints with equiaxial grains microstructure containing austenite both at the boundaries and in the ferrite matrix. Microhardness measurements did not show significant variation in relation to the base metal. The use of welding gases with higher percentages of nitrogen resulted in increases in the austenite volume fraction in the order of 39 to 57% when considering the nitrogen content ranging from 1.5 to 5.5%.Associação Brasileira de Soldagem2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-92242020000100213Soldagem & Inspeção v.25 2020reponame:Revista soldagem & inspeção (Online)instname:Associação Brasileira de Soldagem (ABS)instacron:ABS10.1590/0104-9224/si25.12info:eu-repo/semantics/openAccessPimenta,André RochaDiniz,Marilia GarciaPerez,GeronimoSolórzano-Naranjo,Ivan Guillermoeng2020-06-02T00:00:00Zoai:scielo:S0104-92242020000100213Revistahttp://abs-soldagem.org.br/s&i/https://old.scielo.br/oai/scielo-oai.php||revista-si@abs-soldagem.org.br0104-92241980-6973opendoar:2020-06-02T00:00Revista soldagem & inspeção (Online) - Associação Brasileira de Soldagem (ABS)false
dc.title.none.fl_str_mv Nitrogen Addition to the Shielding Gas for Welding Hyper-duplex Stainless Steel
title Nitrogen Addition to the Shielding Gas for Welding Hyper-duplex Stainless Steel
spellingShingle Nitrogen Addition to the Shielding Gas for Welding Hyper-duplex Stainless Steel
Pimenta,André Rocha
Hyper-duplex stainless steel
GTAW
Nitrogen addition
EBSD
Microstructural characterization
title_short Nitrogen Addition to the Shielding Gas for Welding Hyper-duplex Stainless Steel
title_full Nitrogen Addition to the Shielding Gas for Welding Hyper-duplex Stainless Steel
title_fullStr Nitrogen Addition to the Shielding Gas for Welding Hyper-duplex Stainless Steel
title_full_unstemmed Nitrogen Addition to the Shielding Gas for Welding Hyper-duplex Stainless Steel
title_sort Nitrogen Addition to the Shielding Gas for Welding Hyper-duplex Stainless Steel
author Pimenta,André Rocha
author_facet Pimenta,André Rocha
Diniz,Marilia Garcia
Perez,Geronimo
Solórzano-Naranjo,Ivan Guillermo
author_role author
author2 Diniz,Marilia Garcia
Perez,Geronimo
Solórzano-Naranjo,Ivan Guillermo
author2_role author
author
author
dc.contributor.author.fl_str_mv Pimenta,André Rocha
Diniz,Marilia Garcia
Perez,Geronimo
Solórzano-Naranjo,Ivan Guillermo
dc.subject.por.fl_str_mv Hyper-duplex stainless steel
GTAW
Nitrogen addition
EBSD
Microstructural characterization
topic Hyper-duplex stainless steel
GTAW
Nitrogen addition
EBSD
Microstructural characterization
description Abstract: In the present work we have studied the effects of nitrogen addition on the equilibrium of the volume fraction ratio austenite/ferrite and on the structural properties of weldments produced by gas tungsten arc welding (GTAW). The welded joints in tubes UNS S32707 of hyper-duplex steel were produced using argon and nitrogen gas welding, with nitrogen added in ratios of 1.5, 2.5, 3.5, 4.5, and 5.5%. Microstructural characterization of this material under the different processing condition was conducted by means of optical microscopy, scanning electron microscopy, local chemical analysis by X-ray energy dispersive spectroscopy, electron backscatter diffraction Vickers microhardness test, and digital image processing. All welding conditions resulted in welded joints with equiaxial grains microstructure containing austenite both at the boundaries and in the ferrite matrix. Microhardness measurements did not show significant variation in relation to the base metal. The use of welding gases with higher percentages of nitrogen resulted in increases in the austenite volume fraction in the order of 39 to 57% when considering the nitrogen content ranging from 1.5 to 5.5%.
publishDate 2020
dc.date.none.fl_str_mv 2020-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-92242020000100213
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-92242020000100213
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/0104-9224/si25.12
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Associação Brasileira de Soldagem
publisher.none.fl_str_mv Associação Brasileira de Soldagem
dc.source.none.fl_str_mv Soldagem & Inspeção v.25 2020
reponame:Revista soldagem & inspeção (Online)
instname:Associação Brasileira de Soldagem (ABS)
instacron:ABS
instname_str Associação Brasileira de Soldagem (ABS)
instacron_str ABS
institution ABS
reponame_str Revista soldagem & inspeção (Online)
collection Revista soldagem & inspeção (Online)
repository.name.fl_str_mv Revista soldagem & inspeção (Online) - Associação Brasileira de Soldagem (ABS)
repository.mail.fl_str_mv ||revista-si@abs-soldagem.org.br
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