Deformation induced precipitation in an industrial Ti microalloyed dual phase steel
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | REM. Revista Escola de Minas (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672015000400435 |
Resumo: | Abstract This study evaluated the influence of plastic deformation during hot strip rolling in the size of TiN precipitates in an industrial Ti microalloyed dual phase steel. TiN is usually used for pinning austenitic grain boundaries during recrystallization and its efficiency depends on factors such as size of the precipitates and Ti precipitated fraction. During the slab reheating process, there occurs a partial dissolution of TiN precipitates that subsequently reprecipitates during the hot rolling process. However, this reprecipitation preferentially takes place at crystalline defects which act as nucleation sites. These sites increase with the amount of applied plastic deformation, resulting in smaller precipitates, due to the partial dissolution of larger particles or due to reprecipitation in the nucleation sites. Results indicate a reduction of about 28 % in the average size of the precipitates for samples extracted from hot bands (with deformation) and, therefore, a significant reduction in austenitic grain size, when compared with samples extracted from slabs (with no deformation). |
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REM. Revista Escola de Minas (Online) |
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Deformation induced precipitation in an industrial Ti microalloyed dual phase steelDual-phase steelprecipitationTiN and deformationAbstract This study evaluated the influence of plastic deformation during hot strip rolling in the size of TiN precipitates in an industrial Ti microalloyed dual phase steel. TiN is usually used for pinning austenitic grain boundaries during recrystallization and its efficiency depends on factors such as size of the precipitates and Ti precipitated fraction. During the slab reheating process, there occurs a partial dissolution of TiN precipitates that subsequently reprecipitates during the hot rolling process. However, this reprecipitation preferentially takes place at crystalline defects which act as nucleation sites. These sites increase with the amount of applied plastic deformation, resulting in smaller precipitates, due to the partial dissolution of larger particles or due to reprecipitation in the nucleation sites. Results indicate a reduction of about 28 % in the average size of the precipitates for samples extracted from hot bands (with deformation) and, therefore, a significant reduction in austenitic grain size, when compared with samples extracted from slabs (with no deformation).Escola de Minas2015-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672015000400435Rem: Revista Escola de Minas v.68 n.4 2015reponame:REM. Revista Escola de Minas (Online)instname:Escola de Minasinstacron:ESCOLA DE MINAS10.1590/0370-44672014680140info:eu-repo/semantics/openAccessMohallem,James Albert dos Santos SoaresMartins,João Batista RibeiroMartins,Charles de AbreuMachado,Marcelo Lucas Pereiraeng2015-11-17T00:00:00Zoai:scielo:S0370-44672015000400435Revistahttp://www.scielo.br/remhttps://old.scielo.br/oai/scielo-oai.phpeditor@rem.com.br1807-03530370-4467opendoar:2015-11-17T00:00REM. Revista Escola de Minas (Online) - Escola de Minasfalse |
dc.title.none.fl_str_mv |
Deformation induced precipitation in an industrial Ti microalloyed dual phase steel |
title |
Deformation induced precipitation in an industrial Ti microalloyed dual phase steel |
spellingShingle |
Deformation induced precipitation in an industrial Ti microalloyed dual phase steel Mohallem,James Albert dos Santos Soares Dual-phase steel precipitation TiN and deformation |
title_short |
Deformation induced precipitation in an industrial Ti microalloyed dual phase steel |
title_full |
Deformation induced precipitation in an industrial Ti microalloyed dual phase steel |
title_fullStr |
Deformation induced precipitation in an industrial Ti microalloyed dual phase steel |
title_full_unstemmed |
Deformation induced precipitation in an industrial Ti microalloyed dual phase steel |
title_sort |
Deformation induced precipitation in an industrial Ti microalloyed dual phase steel |
author |
Mohallem,James Albert dos Santos Soares |
author_facet |
Mohallem,James Albert dos Santos Soares Martins,João Batista Ribeiro Martins,Charles de Abreu Machado,Marcelo Lucas Pereira |
author_role |
author |
author2 |
Martins,João Batista Ribeiro Martins,Charles de Abreu Machado,Marcelo Lucas Pereira |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Mohallem,James Albert dos Santos Soares Martins,João Batista Ribeiro Martins,Charles de Abreu Machado,Marcelo Lucas Pereira |
dc.subject.por.fl_str_mv |
Dual-phase steel precipitation TiN and deformation |
topic |
Dual-phase steel precipitation TiN and deformation |
description |
Abstract This study evaluated the influence of plastic deformation during hot strip rolling in the size of TiN precipitates in an industrial Ti microalloyed dual phase steel. TiN is usually used for pinning austenitic grain boundaries during recrystallization and its efficiency depends on factors such as size of the precipitates and Ti precipitated fraction. During the slab reheating process, there occurs a partial dissolution of TiN precipitates that subsequently reprecipitates during the hot rolling process. However, this reprecipitation preferentially takes place at crystalline defects which act as nucleation sites. These sites increase with the amount of applied plastic deformation, resulting in smaller precipitates, due to the partial dissolution of larger particles or due to reprecipitation in the nucleation sites. Results indicate a reduction of about 28 % in the average size of the precipitates for samples extracted from hot bands (with deformation) and, therefore, a significant reduction in austenitic grain size, when compared with samples extracted from slabs (with no deformation). |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-12-01 |
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=S0370-44672015000400435 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672015000400435 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/0370-44672014680140 |
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 |
Escola de Minas |
publisher.none.fl_str_mv |
Escola de Minas |
dc.source.none.fl_str_mv |
Rem: Revista Escola de Minas v.68 n.4 2015 reponame:REM. Revista Escola de Minas (Online) instname:Escola de Minas instacron:ESCOLA DE MINAS |
instname_str |
Escola de Minas |
instacron_str |
ESCOLA DE MINAS |
institution |
ESCOLA DE MINAS |
reponame_str |
REM. Revista Escola de Minas (Online) |
collection |
REM. Revista Escola de Minas (Online) |
repository.name.fl_str_mv |
REM. Revista Escola de Minas (Online) - Escola de Minas |
repository.mail.fl_str_mv |
editor@rem.com.br |
_version_ |
1754122199043670016 |