Second Phase Precipitation in Ultrafine-grained Ferrite Steel

Detalhes bibliográficos
Autor(a) principal: Gallego, Juno [UNESP]
Data de Publicação: 2014
Outros Autores: Rodrigues, Alessandro Roger, Fazolo de Assis, Cleiton Lazaro, Montanari, Luciana
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1590/S1516-14392013005000199
http://hdl.handle.net/11449/113629
Resumo: Grain size refinement is one of the most efficient strengthening mechanisms applied to modern High-Strength Low-Alloy steels (HSLA) because yield strength and toughness are both improved. This paper discusses the distribution of carbides by using transmission electron microscopy (TEM) in a low-carbon steel with ultrafine grained (UFG) ferrite. Fine cementite particles were formed during water quenching due to the auto-tempering of highly distorted martensite. Other fine particles observed under the same condition were nucleated due to the presence of carbide formers such as niobium, titanium and vanadium. TEM analysis showed that cementite particles underwent Ostwald ripening during warm rolling but they were still able to inhibit ferrite grain growth, which was maintained 1 mu m size approximately.
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spelling Second Phase Precipitation in Ultrafine-grained Ferrite Steelultrafine-grained steelthermomechanical processingcarbide/carbonitride precipitationferritemicrostructuretransmission electron microscopyelectron diffractionGrain size refinement is one of the most efficient strengthening mechanisms applied to modern High-Strength Low-Alloy steels (HSLA) because yield strength and toughness are both improved. This paper discusses the distribution of carbides by using transmission electron microscopy (TEM) in a low-carbon steel with ultrafine grained (UFG) ferrite. Fine cementite particles were formed during water quenching due to the auto-tempering of highly distorted martensite. Other fine particles observed under the same condition were nucleated due to the presence of carbide formers such as niobium, titanium and vanadium. TEM analysis showed that cementite particles underwent Ostwald ripening during warm rolling but they were still able to inhibit ferrite grain growth, which was maintained 1 mu m size approximately.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Sao Paulo State Univ, UNESP, Dept Mech Engn, BR-15385000 Ilha Solteira, SP, BrazilUniv Sao Paulo, Dept Mech Engn, BR-13566590 Sao Carlos, SP, BrazilSao Paulo State Univ, UNESP, Dept Mech Engn, BR-15385000 Ilha Solteira, SP, BrazilUniv Fed Sao Carlos, Dept Engenharia MaterialsUniversidade Estadual Paulista (Unesp)Universidade de São Paulo (USP)Gallego, Juno [UNESP]Rodrigues, Alessandro RogerFazolo de Assis, Cleiton LazaroMontanari, Luciana2014-12-03T13:11:50Z2014-12-03T13:11:50Z2014-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article527-534application/pdfhttp://dx.doi.org/10.1590/S1516-14392013005000199Materials Research-ibero-american Journal Of Materials. Sao Carlos: Univ Fed Sao Carlos, Dept Engenharia Materials, v. 17, n. 2, p. 527-534, 2014.1516-1439http://hdl.handle.net/11449/11362910.1590/S1516-14392013005000199S1516-14392013005000199WOS:000336255900035S1516-14392014000200035.pdf71938722948186890000-0002-5477-8139Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMaterials Research-ibero-american Journal of Materials1.1030,398info:eu-repo/semantics/openAccess2024-07-04T20:06:01Zoai:repositorio.unesp.br:11449/113629Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:56:47.159130Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Second Phase Precipitation in Ultrafine-grained Ferrite Steel
title Second Phase Precipitation in Ultrafine-grained Ferrite Steel
spellingShingle Second Phase Precipitation in Ultrafine-grained Ferrite Steel
Gallego, Juno [UNESP]
ultrafine-grained steel
thermomechanical processing
carbide/carbonitride precipitation
ferrite
microstructure
transmission electron microscopy
electron diffraction
title_short Second Phase Precipitation in Ultrafine-grained Ferrite Steel
title_full Second Phase Precipitation in Ultrafine-grained Ferrite Steel
title_fullStr Second Phase Precipitation in Ultrafine-grained Ferrite Steel
title_full_unstemmed Second Phase Precipitation in Ultrafine-grained Ferrite Steel
title_sort Second Phase Precipitation in Ultrafine-grained Ferrite Steel
author Gallego, Juno [UNESP]
author_facet Gallego, Juno [UNESP]
Rodrigues, Alessandro Roger
Fazolo de Assis, Cleiton Lazaro
Montanari, Luciana
author_role author
author2 Rodrigues, Alessandro Roger
Fazolo de Assis, Cleiton Lazaro
Montanari, Luciana
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Universidade de São Paulo (USP)
dc.contributor.author.fl_str_mv Gallego, Juno [UNESP]
Rodrigues, Alessandro Roger
Fazolo de Assis, Cleiton Lazaro
Montanari, Luciana
dc.subject.por.fl_str_mv ultrafine-grained steel
thermomechanical processing
carbide/carbonitride precipitation
ferrite
microstructure
transmission electron microscopy
electron diffraction
topic ultrafine-grained steel
thermomechanical processing
carbide/carbonitride precipitation
ferrite
microstructure
transmission electron microscopy
electron diffraction
description Grain size refinement is one of the most efficient strengthening mechanisms applied to modern High-Strength Low-Alloy steels (HSLA) because yield strength and toughness are both improved. This paper discusses the distribution of carbides by using transmission electron microscopy (TEM) in a low-carbon steel with ultrafine grained (UFG) ferrite. Fine cementite particles were formed during water quenching due to the auto-tempering of highly distorted martensite. Other fine particles observed under the same condition were nucleated due to the presence of carbide formers such as niobium, titanium and vanadium. TEM analysis showed that cementite particles underwent Ostwald ripening during warm rolling but they were still able to inhibit ferrite grain growth, which was maintained 1 mu m size approximately.
publishDate 2014
dc.date.none.fl_str_mv 2014-12-03T13:11:50Z
2014-12-03T13:11:50Z
2014-03-01
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/10.1590/S1516-14392013005000199
Materials Research-ibero-american Journal Of Materials. Sao Carlos: Univ Fed Sao Carlos, Dept Engenharia Materials, v. 17, n. 2, p. 527-534, 2014.
1516-1439
http://hdl.handle.net/11449/113629
10.1590/S1516-14392013005000199
S1516-14392013005000199
WOS:000336255900035
S1516-14392014000200035.pdf
7193872294818689
0000-0002-5477-8139
url http://dx.doi.org/10.1590/S1516-14392013005000199
http://hdl.handle.net/11449/113629
identifier_str_mv Materials Research-ibero-american Journal Of Materials. Sao Carlos: Univ Fed Sao Carlos, Dept Engenharia Materials, v. 17, n. 2, p. 527-534, 2014.
1516-1439
10.1590/S1516-14392013005000199
S1516-14392013005000199
WOS:000336255900035
S1516-14392014000200035.pdf
7193872294818689
0000-0002-5477-8139
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Materials Research-ibero-american Journal of Materials
1.103
0,398
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 527-534
application/pdf
dc.publisher.none.fl_str_mv Univ Fed Sao Carlos, Dept Engenharia Materials
publisher.none.fl_str_mv Univ Fed Sao Carlos, Dept Engenharia Materials
dc.source.none.fl_str_mv Web of Science
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
_version_ 1808128439451910144

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