Nitrogen Addition to the Shielding Gas for Welding Hyper-duplex Stainless Steel
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , |
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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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 |
format |
article |
status_str |
publishedVersion |
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 |
_version_ |
1754213004385189888 |