Microstructural Transformation in a Root Pass of Superduplex Stainless Steel Multipass Welding

Detalhes bibliográficos
Autor(a) principal: Villalobos-Vera,Doris Ivette
Data de Publicação: 2017
Outros Autores: Mendoza-Bravo,Ivan
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Materials research (São Carlos. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000200303
Resumo: The microstructure of the root pass in a superduplex stainless steel multipass welding was investigated.Results showed that the welding metal has an austenite matrix with particles of sigma phase formed in the ferrite/austenite interface and intragranularly.Eventhough the filler metal is intended to keep the phase balance after welding,the welding metal presented a considerable decrease in the ferrite content and a high proportion of sigma phase. Despite the exposition to thermal cycles on every pass, the heat affected zone presented a microstructure consisting of ferrite and austenite with a small proportion of sigma phase.Therefore,the thermal cycles of every welding pass allowed the decomposition of ferrite into austenite and sigma phase in points close to the heat source, changing the final microstructure.
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spelling Microstructural Transformation in a Root Pass of Superduplex Stainless Steel Multipass Weldingduplex stainless steelthermal cyclessigma phasemultipass weldingThe microstructure of the root pass in a superduplex stainless steel multipass welding was investigated.Results showed that the welding metal has an austenite matrix with particles of sigma phase formed in the ferrite/austenite interface and intragranularly.Eventhough the filler metal is intended to keep the phase balance after welding,the welding metal presented a considerable decrease in the ferrite content and a high proportion of sigma phase. Despite the exposition to thermal cycles on every pass, the heat affected zone presented a microstructure consisting of ferrite and austenite with a small proportion of sigma phase.Therefore,the thermal cycles of every welding pass allowed the decomposition of ferrite into austenite and sigma phase in points close to the heat source, changing the final microstructure.ABM, ABC, ABPol2017-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000200303Materials Research v.20 n.2 2017reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2016-0506info:eu-repo/semantics/openAccessVillalobos-Vera,Doris IvetteMendoza-Bravo,Ivaneng2017-04-18T00:00:00Zoai:scielo:S1516-14392017000200303Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2017-04-18T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Microstructural Transformation in a Root Pass of Superduplex Stainless Steel Multipass Welding
title Microstructural Transformation in a Root Pass of Superduplex Stainless Steel Multipass Welding
spellingShingle Microstructural Transformation in a Root Pass of Superduplex Stainless Steel Multipass Welding
Villalobos-Vera,Doris Ivette
duplex stainless steel
thermal cycles
sigma phase
multipass welding
title_short Microstructural Transformation in a Root Pass of Superduplex Stainless Steel Multipass Welding
title_full Microstructural Transformation in a Root Pass of Superduplex Stainless Steel Multipass Welding
title_fullStr Microstructural Transformation in a Root Pass of Superduplex Stainless Steel Multipass Welding
title_full_unstemmed Microstructural Transformation in a Root Pass of Superduplex Stainless Steel Multipass Welding
title_sort Microstructural Transformation in a Root Pass of Superduplex Stainless Steel Multipass Welding
author Villalobos-Vera,Doris Ivette
author_facet Villalobos-Vera,Doris Ivette
Mendoza-Bravo,Ivan
author_role author
author2 Mendoza-Bravo,Ivan
author2_role author
dc.contributor.author.fl_str_mv Villalobos-Vera,Doris Ivette
Mendoza-Bravo,Ivan
dc.subject.por.fl_str_mv duplex stainless steel
thermal cycles
sigma phase
multipass welding
topic duplex stainless steel
thermal cycles
sigma phase
multipass welding
description The microstructure of the root pass in a superduplex stainless steel multipass welding was investigated.Results showed that the welding metal has an austenite matrix with particles of sigma phase formed in the ferrite/austenite interface and intragranularly.Eventhough the filler metal is intended to keep the phase balance after welding,the welding metal presented a considerable decrease in the ferrite content and a high proportion of sigma phase. Despite the exposition to thermal cycles on every pass, the heat affected zone presented a microstructure consisting of ferrite and austenite with a small proportion of sigma phase.Therefore,the thermal cycles of every welding pass allowed the decomposition of ferrite into austenite and sigma phase in points close to the heat source, changing the final microstructure.
publishDate 2017
dc.date.none.fl_str_mv 2017-04-01
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=S1516-14392017000200303
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000200303
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1980-5373-mr-2016-0506
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 ABM, ABC, ABPol
publisher.none.fl_str_mv ABM, ABC, ABPol
dc.source.none.fl_str_mv Materials Research v.20 n.2 2017
reponame:Materials research (São Carlos. Online)
instname:Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
instname_str Universidade Federal de São Carlos (UFSCAR)
instacron_str ABM ABC ABPOL
institution ABM ABC ABPOL
reponame_str Materials research (São Carlos. Online)
collection Materials research (São Carlos. Online)
repository.name.fl_str_mv Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)
repository.mail.fl_str_mv dedz@power.ufscar.br
_version_ 1754212670600380416

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