Microstructure and mechanical properties of two API steels for iron ore pipelines.

Detalhes bibliográficos
Autor(a) principal: Godefroid, Leonardo Barbosa
Data de Publicação: 2014
Outros Autores: Cândido, Luiz Cláudio, Toffolo, Rodrigo Vicente Bayão, Barbosa, Luiz Henrique Soares
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFOP
Texto Completo: http://www.repositorio.ufop.br/handle/123456789/5467
http://dx.doi.org/10.1590/S1516-14392014005000068
Resumo: This research compares the mechanical behavior of two API steels (X60 and X70) used in the longest pipeline in the world for the conveyance of iron ore. Tensile tests, Charpy impact tests, CTOD tests and fatigue crack growth tests are performed at ambient temperature. Metallographic examination showed a banded microstructure consisting of polygonal ferrite and pearlite in both steels, with smaller grain size and the presence of a small quantity of bainite in the X70 steel. All the mechanical tests revealed a ductile behavior for the two steels. The X70 steel is preferable for the pipeline project, due its better mechanical resistance, with no significant loss of fracture toughness and fatigue resistance. Its performance could be even better, if an appropriate combination of thermomechanical processing parameters were able to produce a microstructure with minor amount of pearlite, where acicular ferrite/bainite are present.
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spelling Microstructure and mechanical properties of two API steels for iron ore pipelines.API steelsFracture toughnessFatigue crack growthThis research compares the mechanical behavior of two API steels (X60 and X70) used in the longest pipeline in the world for the conveyance of iron ore. Tensile tests, Charpy impact tests, CTOD tests and fatigue crack growth tests are performed at ambient temperature. Metallographic examination showed a banded microstructure consisting of polygonal ferrite and pearlite in both steels, with smaller grain size and the presence of a small quantity of bainite in the X70 steel. All the mechanical tests revealed a ductile behavior for the two steels. The X70 steel is preferable for the pipeline project, due its better mechanical resistance, with no significant loss of fracture toughness and fatigue resistance. Its performance could be even better, if an appropriate combination of thermomechanical processing parameters were able to produce a microstructure with minor amount of pearlite, where acicular ferrite/bainite are present.2015-05-22T14:59:46Z2015-05-22T14:59:46Z2014info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfCODEFROID, L. B. et al. Microstructure and mechanical properties of two API steels for iron ore pipelines. Materials Research, São Carlos, v. 17, p. 114-120, 2014. Disponível em: <http://www.scielo.br/pdf/mr/2014nahead/aop_matres_223713.pdf>. Acesso em: 09 abr. 2015.1516-1439http://www.repositorio.ufop.br/handle/123456789/5467http://dx.doi.org/10.1590/S1516-14392014005000068Autorização concedida ao Repositório Institucional da UFOP pela Materials Research em 25/10/2013 com as seguintes condições: disponível sob Licença Creative Commons que permite copiar, distribuir e transmitir o trabalho desde que sejam citados o autor e o licenciante. Não permite o uso para fins comerciais nem a adaptação.info:eu-repo/semantics/openAccessGodefroid, Leonardo BarbosaCândido, Luiz CláudioToffolo, Rodrigo Vicente BayãoBarbosa, Luiz Henrique Soaresengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOP2019-07-25T16:14:53Zoai:repositorio.ufop.br:123456789/5467Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332019-07-25T16:14:53Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false
dc.title.none.fl_str_mv Microstructure and mechanical properties of two API steels for iron ore pipelines.
title Microstructure and mechanical properties of two API steels for iron ore pipelines.
spellingShingle Microstructure and mechanical properties of two API steels for iron ore pipelines.
Godefroid, Leonardo Barbosa
API steels
Fracture toughness
Fatigue crack growth
title_short Microstructure and mechanical properties of two API steels for iron ore pipelines.
title_full Microstructure and mechanical properties of two API steels for iron ore pipelines.
title_fullStr Microstructure and mechanical properties of two API steels for iron ore pipelines.
title_full_unstemmed Microstructure and mechanical properties of two API steels for iron ore pipelines.
title_sort Microstructure and mechanical properties of two API steels for iron ore pipelines.
author Godefroid, Leonardo Barbosa
author_facet Godefroid, Leonardo Barbosa
Cândido, Luiz Cláudio
Toffolo, Rodrigo Vicente Bayão
Barbosa, Luiz Henrique Soares
author_role author
author2 Cândido, Luiz Cláudio
Toffolo, Rodrigo Vicente Bayão
Barbosa, Luiz Henrique Soares
author2_role author
author
author
dc.contributor.author.fl_str_mv Godefroid, Leonardo Barbosa
Cândido, Luiz Cláudio
Toffolo, Rodrigo Vicente Bayão
Barbosa, Luiz Henrique Soares
dc.subject.por.fl_str_mv API steels
Fracture toughness
Fatigue crack growth
topic API steels
Fracture toughness
Fatigue crack growth
description This research compares the mechanical behavior of two API steels (X60 and X70) used in the longest pipeline in the world for the conveyance of iron ore. Tensile tests, Charpy impact tests, CTOD tests and fatigue crack growth tests are performed at ambient temperature. Metallographic examination showed a banded microstructure consisting of polygonal ferrite and pearlite in both steels, with smaller grain size and the presence of a small quantity of bainite in the X70 steel. All the mechanical tests revealed a ductile behavior for the two steels. The X70 steel is preferable for the pipeline project, due its better mechanical resistance, with no significant loss of fracture toughness and fatigue resistance. Its performance could be even better, if an appropriate combination of thermomechanical processing parameters were able to produce a microstructure with minor amount of pearlite, where acicular ferrite/bainite are present.
publishDate 2014
dc.date.none.fl_str_mv 2014
2015-05-22T14:59:46Z
2015-05-22T14:59:46Z
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 CODEFROID, L. B. et al. Microstructure and mechanical properties of two API steels for iron ore pipelines. Materials Research, São Carlos, v. 17, p. 114-120, 2014. Disponível em: <http://www.scielo.br/pdf/mr/2014nahead/aop_matres_223713.pdf>. Acesso em: 09 abr. 2015.
1516-1439
http://www.repositorio.ufop.br/handle/123456789/5467
http://dx.doi.org/10.1590/S1516-14392014005000068
identifier_str_mv CODEFROID, L. B. et al. Microstructure and mechanical properties of two API steels for iron ore pipelines. Materials Research, São Carlos, v. 17, p. 114-120, 2014. Disponível em: <http://www.scielo.br/pdf/mr/2014nahead/aop_matres_223713.pdf>. Acesso em: 09 abr. 2015.
1516-1439
url http://www.repositorio.ufop.br/handle/123456789/5467
http://dx.doi.org/10.1590/S1516-14392014005000068
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFOP
instname:Universidade Federal de Ouro Preto (UFOP)
instacron:UFOP
instname_str Universidade Federal de Ouro Preto (UFOP)
instacron_str UFOP
institution UFOP
reponame_str Repositório Institucional da UFOP
collection Repositório Institucional da UFOP
repository.name.fl_str_mv Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)
repository.mail.fl_str_mv repositorio@ufop.edu.br
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