Corrosion Evaluation of SAW Welded API 5L X-80 Joints in H2S-Containing Solution

Detalhes bibliográficos
Autor(a) principal: Ballesteros,Adriana Forero
Data de Publicação: 2015
Outros Autores: Gomes,José Antônio Ponciano, Bott,I. S.
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=S1516-14392015000200417
Resumo: The H2S corrosion resistance of API 5L X80 steel and its welded joint (WJ) were evaluated using the weight loss method in a 5%wt brine solution and different corrosive environments based on a sodium thiosulphate solution (10–3 and 10–2 mol/l). The weight loss method, scanning electron microscopy (SEM) and X-ray diffraction analysis (XRD) were applied to measure the effects of different H2S concentrations and pH (3 and 5) on the corrosion process and formation of corrosion product films. The results showed that the obtained corrosion rate and corrosion product films for both API 5L X80 steel and its submerged arc welding (SAW) WJ depend on the pH, H2S concentration and metal surface microstructural characteristics. The corrosion product film consists of two layers with different morphologies. The heat affected zone (HAZ) shows severe localized corrosion attack relative to the base metal (BM) and weld metal (WM), which is attributed to the microstructural characteristics of this region.
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spelling Corrosion Evaluation of SAW Welded API 5L X-80 Joints in H2S-Containing SolutioncorrosionH2Ssteelwelded jointlocalized attackThe H2S corrosion resistance of API 5L X80 steel and its welded joint (WJ) were evaluated using the weight loss method in a 5%wt brine solution and different corrosive environments based on a sodium thiosulphate solution (10–3 and 10–2 mol/l). The weight loss method, scanning electron microscopy (SEM) and X-ray diffraction analysis (XRD) were applied to measure the effects of different H2S concentrations and pH (3 and 5) on the corrosion process and formation of corrosion product films. The results showed that the obtained corrosion rate and corrosion product films for both API 5L X80 steel and its submerged arc welding (SAW) WJ depend on the pH, H2S concentration and metal surface microstructural characteristics. The corrosion product film consists of two layers with different morphologies. The heat affected zone (HAZ) shows severe localized corrosion attack relative to the base metal (BM) and weld metal (WM), which is attributed to the microstructural characteristics of this region.ABM, ABC, ABPol2015-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392015000200417Materials Research v.18 n.2 2015reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1516-1439.368714info:eu-repo/semantics/openAccessBallesteros,Adriana ForeroGomes,José Antônio PoncianoBott,I. S.eng2016-06-10T00:00:00Zoai:scielo:S1516-14392015000200417Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2016-06-10T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Corrosion Evaluation of SAW Welded API 5L X-80 Joints in H2S-Containing Solution
title Corrosion Evaluation of SAW Welded API 5L X-80 Joints in H2S-Containing Solution
spellingShingle Corrosion Evaluation of SAW Welded API 5L X-80 Joints in H2S-Containing Solution
Ballesteros,Adriana Forero
corrosion
H2S
steel
welded joint
localized attack
title_short Corrosion Evaluation of SAW Welded API 5L X-80 Joints in H2S-Containing Solution
title_full Corrosion Evaluation of SAW Welded API 5L X-80 Joints in H2S-Containing Solution
title_fullStr Corrosion Evaluation of SAW Welded API 5L X-80 Joints in H2S-Containing Solution
title_full_unstemmed Corrosion Evaluation of SAW Welded API 5L X-80 Joints in H2S-Containing Solution
title_sort Corrosion Evaluation of SAW Welded API 5L X-80 Joints in H2S-Containing Solution
author Ballesteros,Adriana Forero
author_facet Ballesteros,Adriana Forero
Gomes,José Antônio Ponciano
Bott,I. S.
author_role author
author2 Gomes,José Antônio Ponciano
Bott,I. S.
author2_role author
author
dc.contributor.author.fl_str_mv Ballesteros,Adriana Forero
Gomes,José Antônio Ponciano
Bott,I. S.
dc.subject.por.fl_str_mv corrosion
H2S
steel
welded joint
localized attack
topic corrosion
H2S
steel
welded joint
localized attack
description The H2S corrosion resistance of API 5L X80 steel and its welded joint (WJ) were evaluated using the weight loss method in a 5%wt brine solution and different corrosive environments based on a sodium thiosulphate solution (10–3 and 10–2 mol/l). The weight loss method, scanning electron microscopy (SEM) and X-ray diffraction analysis (XRD) were applied to measure the effects of different H2S concentrations and pH (3 and 5) on the corrosion process and formation of corrosion product films. The results showed that the obtained corrosion rate and corrosion product films for both API 5L X80 steel and its submerged arc welding (SAW) WJ depend on the pH, H2S concentration and metal surface microstructural characteristics. The corrosion product film consists of two layers with different morphologies. The heat affected zone (HAZ) shows severe localized corrosion attack relative to the base metal (BM) and weld metal (WM), which is attributed to the microstructural characteristics of this region.
publishDate 2015
dc.date.none.fl_str_mv 2015-04-01
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=S1516-14392015000200417
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392015000200417
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1516-1439.368714
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.18 n.2 2015
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_ 1754212665455017984

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