Microstructural characterization of bainitic steel submitted to torsion testing and interrupted accelerated cooling.

Detalhes bibliográficos
Autor(a) principal: Cota, André Barros
Data de Publicação: 2000
Outros Autores: Santos, Dagoberto Brandão
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFOP
dARK ID: ark:/61566/0013000005qq3
Texto Completo: http://www.repositorio.ufop.br/handle/123456789/992
Resumo: HSLA low-carbon bainitic steel containing B was submitted to torsion tests to simulate controlled rolling, followed by interrupted accelerated cooling. Microstructural characteristics and the mechanisms for the refinement of structure were evaluated using light microscopy, scanning electron microscopy, transmission electron microscopy, and Vickers hardness testing. The final microstructure was found to contain complex mixture of granular bainite, small islands of MA constituent, bainitic ferrite, and polygonal ferrite. Increasing the cooling rate or decreasing the finish cooling temperature resulted in a decrease in the volume fraction and average size of the MA islands and the polygonal ferrite. A finish cooling temperature of 400 8 C produced a microstructure consisting of fine laths of bainitic ferrite with an interlath MA constituent. A quantitative relationship between the accelerated cooling variables and the ferrite grain size was developed.
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spelling Microstructural characterization of bainitic steel submitted to torsion testing and interrupted accelerated cooling.HSLA low-carbon bainitic steel containing B was submitted to torsion tests to simulate controlled rolling, followed by interrupted accelerated cooling. Microstructural characteristics and the mechanisms for the refinement of structure were evaluated using light microscopy, scanning electron microscopy, transmission electron microscopy, and Vickers hardness testing. The final microstructure was found to contain complex mixture of granular bainite, small islands of MA constituent, bainitic ferrite, and polygonal ferrite. Increasing the cooling rate or decreasing the finish cooling temperature resulted in a decrease in the volume fraction and average size of the MA islands and the polygonal ferrite. A finish cooling temperature of 400 8 C produced a microstructure consisting of fine laths of bainitic ferrite with an interlath MA constituent. A quantitative relationship between the accelerated cooling variables and the ferrite grain size was developed.2012-07-05T15:31:12Z2012-07-05T15:31:12Z2000info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfCOTA, A. B.; SANTOS, D. B. Microstructural characterization of bainitic steel submitted to torsion testing and interrupted accelerated cooling. Materials Characterization, v. 44, n.3, p.291–299, mar. 2000. Disponível em: <http://144.206.159.178/ft/714/11857/240507.pdf>. Acesso em: 05 jul. 2012.10445803http://www.repositorio.ufop.br/handle/123456789/992ark:/61566/0013000005qq3O Periódico Materials Characterization concede permissão para depósito do artigo no Repositório Institucional da UFOP. Número da licença: 3345930428979.info:eu-repo/semantics/openAccessCota, André BarrosSantos, Dagoberto Brandãoengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOP2024-11-10T16:53:55Zoai:repositorio.ufop.br:123456789/992Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332024-11-10T16:53:55Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false
dc.title.none.fl_str_mv Microstructural characterization of bainitic steel submitted to torsion testing and interrupted accelerated cooling.
title Microstructural characterization of bainitic steel submitted to torsion testing and interrupted accelerated cooling.
spellingShingle Microstructural characterization of bainitic steel submitted to torsion testing and interrupted accelerated cooling.
Cota, André Barros
title_short Microstructural characterization of bainitic steel submitted to torsion testing and interrupted accelerated cooling.
title_full Microstructural characterization of bainitic steel submitted to torsion testing and interrupted accelerated cooling.
title_fullStr Microstructural characterization of bainitic steel submitted to torsion testing and interrupted accelerated cooling.
title_full_unstemmed Microstructural characterization of bainitic steel submitted to torsion testing and interrupted accelerated cooling.
title_sort Microstructural characterization of bainitic steel submitted to torsion testing and interrupted accelerated cooling.
author Cota, André Barros
author_facet Cota, André Barros
Santos, Dagoberto Brandão
author_role author
author2 Santos, Dagoberto Brandão
author2_role author
dc.contributor.author.fl_str_mv Cota, André Barros
Santos, Dagoberto Brandão
description HSLA low-carbon bainitic steel containing B was submitted to torsion tests to simulate controlled rolling, followed by interrupted accelerated cooling. Microstructural characteristics and the mechanisms for the refinement of structure were evaluated using light microscopy, scanning electron microscopy, transmission electron microscopy, and Vickers hardness testing. The final microstructure was found to contain complex mixture of granular bainite, small islands of MA constituent, bainitic ferrite, and polygonal ferrite. Increasing the cooling rate or decreasing the finish cooling temperature resulted in a decrease in the volume fraction and average size of the MA islands and the polygonal ferrite. A finish cooling temperature of 400 8 C produced a microstructure consisting of fine laths of bainitic ferrite with an interlath MA constituent. A quantitative relationship between the accelerated cooling variables and the ferrite grain size was developed.
publishDate 2000
dc.date.none.fl_str_mv 2000
2012-07-05T15:31:12Z
2012-07-05T15:31:12Z
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 COTA, A. B.; SANTOS, D. B. Microstructural characterization of bainitic steel submitted to torsion testing and interrupted accelerated cooling. Materials Characterization, v. 44, n.3, p.291–299, mar. 2000. Disponível em: <http://144.206.159.178/ft/714/11857/240507.pdf>. Acesso em: 05 jul. 2012.
10445803
http://www.repositorio.ufop.br/handle/123456789/992
dc.identifier.dark.fl_str_mv ark:/61566/0013000005qq3
identifier_str_mv COTA, A. B.; SANTOS, D. B. Microstructural characterization of bainitic steel submitted to torsion testing and interrupted accelerated cooling. Materials Characterization, v. 44, n.3, p.291–299, mar. 2000. Disponível em: <http://144.206.159.178/ft/714/11857/240507.pdf>. Acesso em: 05 jul. 2012.
10445803
ark:/61566/0013000005qq3
url http://www.repositorio.ufop.br/handle/123456789/992
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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