Influence of hydrogen on the microstructure and fracture toughness of friction stir welded plates of API 5L X80 pipeline steel
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.ijhydene.2019.06.210 http://hdl.handle.net/11449/187905 |
Resumo: | In this work, the influence of hydrogen on the microstructure and fracture toughness of API 5L X80 high strength pipeline steel welded by friction stir welding was assessed. Samples were hydrogenated at room temperature for a duration of 10 h in a solution of 0.1 M H2SO4 + 10 mg L−1 As2O3, with an intensity current of 20 mA cm−2. Fracture toughness tests were performed at 0 °C in single-edged notched bending samples, using the Critical Crack Tip Opening Displacement (CTOD) parameter. Notches were positioned in different regions within the joint, such as the stir zone, hard zone, and base material. Hydrogen induces internal stress between bainite packets and ferrite plates within bainite packets. Besides, hydrogen acted as a reducer of the strain capacity of the three zones. The base metal had a moderate capacity to resist stable crack growth, displaying a ductile fracture mechanism. While the hard zone showed a brittle behavior with CTOD values below the acceptance limits for pipeline design (0.1–0.2 mm). The fracture toughness of the stir zone is higher than that of the base metal. Nevertheless, the stir zone displayed higher data dispersion due to its high inhomogeneity. Hence, it can also show a brittle behavior with critical CTOD values. |
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Influence of hydrogen on the microstructure and fracture toughness of friction stir welded plates of API 5L X80 pipeline steelFriction stir weldingHigh strength steelHydrogen embrittlementISO 3183 X80 MIn this work, the influence of hydrogen on the microstructure and fracture toughness of API 5L X80 high strength pipeline steel welded by friction stir welding was assessed. Samples were hydrogenated at room temperature for a duration of 10 h in a solution of 0.1 M H2SO4 + 10 mg L−1 As2O3, with an intensity current of 20 mA cm−2. Fracture toughness tests were performed at 0 °C in single-edged notched bending samples, using the Critical Crack Tip Opening Displacement (CTOD) parameter. Notches were positioned in different regions within the joint, such as the stir zone, hard zone, and base material. Hydrogen induces internal stress between bainite packets and ferrite plates within bainite packets. Besides, hydrogen acted as a reducer of the strain capacity of the three zones. The base metal had a moderate capacity to resist stable crack growth, displaying a ductile fracture mechanism. While the hard zone showed a brittle behavior with CTOD values below the acceptance limits for pipeline design (0.1–0.2 mm). The fracture toughness of the stir zone is higher than that of the base metal. Nevertheless, the stir zone displayed higher data dispersion due to its high inhomogeneity. Hence, it can also show a brittle behavior with critical CTOD values.Centro Nacional de Pesquisa em Energia e MateriaisConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Laboratório Nacional de NanotecnologiaPetrobrasState University of Ponta Grossa UEPGBrazilian Nanotechnology National Laboratory LNNano Brazilian Center for Research in Energy and MaterialsCenter for Engineering Modeling and Applied Social Sciences (CECS) Universidade Federal do ABC (UFABC)State University of Campinas UNICAMPMetallurgical and Materials Engineering University of São Paulo USPPetrobras CENPESUNESP – São Paulo State UniversityUNESP – São Paulo State UniversityUniversidade Estadual de Ponta Grossa (UEPG)Brazilian Center for Research in Energy and MaterialsUniversidade Federal do ABC (UFABC)Universidade Estadual de Campinas (UNICAMP)Universidade de São Paulo (USP)CENPESUniversidade Estadual Paulista (Unesp)Hoyos, J. J.Masoumi, M.Pereira, V. F.Tschiptschin, A. P.Paes, M. T.P.Avila, J. A. [UNESP]2019-10-06T15:50:52Z2019-10-06T15:50:52Z2019-08-30info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article23458-23471http://dx.doi.org/10.1016/j.ijhydene.2019.06.210International Journal of Hydrogen Energy, v. 44, n. 41, p. 23458-23471, 2019.0360-3199http://hdl.handle.net/11449/18790510.1016/j.ijhydene.2019.06.2102-s2.0-85069742303Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Journal of Hydrogen Energyinfo:eu-repo/semantics/openAccess2021-10-23T12:24:09Zoai:repositorio.unesp.br:11449/187905Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T12:24:09Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Influence of hydrogen on the microstructure and fracture toughness of friction stir welded plates of API 5L X80 pipeline steel |
title |
Influence of hydrogen on the microstructure and fracture toughness of friction stir welded plates of API 5L X80 pipeline steel |
spellingShingle |
Influence of hydrogen on the microstructure and fracture toughness of friction stir welded plates of API 5L X80 pipeline steel Hoyos, J. J. Friction stir welding High strength steel Hydrogen embrittlement ISO 3183 X80 M |
title_short |
Influence of hydrogen on the microstructure and fracture toughness of friction stir welded plates of API 5L X80 pipeline steel |
title_full |
Influence of hydrogen on the microstructure and fracture toughness of friction stir welded plates of API 5L X80 pipeline steel |
title_fullStr |
Influence of hydrogen on the microstructure and fracture toughness of friction stir welded plates of API 5L X80 pipeline steel |
title_full_unstemmed |
Influence of hydrogen on the microstructure and fracture toughness of friction stir welded plates of API 5L X80 pipeline steel |
title_sort |
Influence of hydrogen on the microstructure and fracture toughness of friction stir welded plates of API 5L X80 pipeline steel |
author |
Hoyos, J. J. |
author_facet |
Hoyos, J. J. Masoumi, M. Pereira, V. F. Tschiptschin, A. P. Paes, M. T.P. Avila, J. A. [UNESP] |
author_role |
author |
author2 |
Masoumi, M. Pereira, V. F. Tschiptschin, A. P. Paes, M. T.P. Avila, J. A. [UNESP] |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual de Ponta Grossa (UEPG) Brazilian Center for Research in Energy and Materials Universidade Federal do ABC (UFABC) Universidade Estadual de Campinas (UNICAMP) Universidade de São Paulo (USP) CENPES Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Hoyos, J. J. Masoumi, M. Pereira, V. F. Tschiptschin, A. P. Paes, M. T.P. Avila, J. A. [UNESP] |
dc.subject.por.fl_str_mv |
Friction stir welding High strength steel Hydrogen embrittlement ISO 3183 X80 M |
topic |
Friction stir welding High strength steel Hydrogen embrittlement ISO 3183 X80 M |
description |
In this work, the influence of hydrogen on the microstructure and fracture toughness of API 5L X80 high strength pipeline steel welded by friction stir welding was assessed. Samples were hydrogenated at room temperature for a duration of 10 h in a solution of 0.1 M H2SO4 + 10 mg L−1 As2O3, with an intensity current of 20 mA cm−2. Fracture toughness tests were performed at 0 °C in single-edged notched bending samples, using the Critical Crack Tip Opening Displacement (CTOD) parameter. Notches were positioned in different regions within the joint, such as the stir zone, hard zone, and base material. Hydrogen induces internal stress between bainite packets and ferrite plates within bainite packets. Besides, hydrogen acted as a reducer of the strain capacity of the three zones. The base metal had a moderate capacity to resist stable crack growth, displaying a ductile fracture mechanism. While the hard zone showed a brittle behavior with CTOD values below the acceptance limits for pipeline design (0.1–0.2 mm). The fracture toughness of the stir zone is higher than that of the base metal. Nevertheless, the stir zone displayed higher data dispersion due to its high inhomogeneity. Hence, it can also show a brittle behavior with critical CTOD values. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-10-06T15:50:52Z 2019-10-06T15:50:52Z 2019-08-30 |
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 |
http://dx.doi.org/10.1016/j.ijhydene.2019.06.210 International Journal of Hydrogen Energy, v. 44, n. 41, p. 23458-23471, 2019. 0360-3199 http://hdl.handle.net/11449/187905 10.1016/j.ijhydene.2019.06.210 2-s2.0-85069742303 |
url |
http://dx.doi.org/10.1016/j.ijhydene.2019.06.210 http://hdl.handle.net/11449/187905 |
identifier_str_mv |
International Journal of Hydrogen Energy, v. 44, n. 41, p. 23458-23471, 2019. 0360-3199 10.1016/j.ijhydene.2019.06.210 2-s2.0-85069742303 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
International Journal of Hydrogen Energy |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
23458-23471 |
dc.source.none.fl_str_mv |
Scopus 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 |
|
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1803046353561976832 |