Second phase precipitation in ultrafine-grained ferrite steel

Detalhes bibliográficos
Autor(a) principal: Gallego,Juno
Data de Publicação: 2014
Outros Autores: Rodrigues,Alessandro Roger, Assis,Cleiton Lázaro Fazolo de, Montanari,Luciana
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=S1516-14392014000200035
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 1µm size approximately.
id ABMABCABPOL-1_f4f86d0f9c08969ee0313399e11226f9
oai_identifier_str oai:scielo:S1516-14392014000200035
network_acronym_str ABMABCABPOL-1
network_name_str Materials research (São Carlos. Online)
repository_id_str
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 1µm size approximately.ABM, ABC, ABPol2014-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000200035Materials Research v.17 n.2 2014reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392013005000199info:eu-repo/semantics/openAccessGallego,JunoRodrigues,Alessandro RogerAssis,Cleiton Lázaro Fazolo deMontanari,Lucianaeng2014-05-06T00:00:00Zoai:scielo:S1516-14392014000200035Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2014-05-06T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)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
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
author_facet Gallego,Juno
Rodrigues,Alessandro Roger
Assis,Cleiton Lázaro Fazolo de
Montanari,Luciana
author_role author
author2 Rodrigues,Alessandro Roger
Assis,Cleiton Lázaro Fazolo de
Montanari,Luciana
author2_role author
author
author
dc.contributor.author.fl_str_mv Gallego,Juno
Rodrigues,Alessandro Roger
Assis,Cleiton Lázaro Fazolo de
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 1µm size approximately.
publishDate 2014
dc.date.none.fl_str_mv 2014-04-01
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=S1516-14392014000200035
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000200035
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392013005000199
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.17 n.2 2014
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_ 1754212663769956352

Registros relacionados