Kinetics of austenite formation during continuous heating in a low carbon steel.

Detalhes bibliográficos
Autor(a) principal: Oliveira, Fernando Lucas Gonçalves e
Data de Publicação: 2007
Outros Autores: Andrade, Margareth Spangler, Cota, André Barros
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFOP
Texto Completo: http://www.repositorio.ufop.br/handle/123456789/978
Resumo: The kinetics and microstructural evolution of austenite formation in a low carbon steel, with initial microstructure composed of ferrite and pearlite, were studied during continuous heating, by using dilatometric analysis and measurements of microstructural parameters. The formation of austenite was observed to occur in two stages: (a) pearlite dissolution and (b) ferrite to austenite transformation. The critical temperatures of austenite formation in continuous heating increase with increasing heating rate, with greater influence on the finishing temperature of austenite formation. For both the 1 °C/s and 0.1 °C/s heating rates, the formation rate of austenite reaches a maximum at approximately the finishing temperature of pearlite dissolution, and the formation rate of austenite as a function of the temperature is greater at the higher heating rate.
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spelling Oliveira, Fernando Lucas Gonçalves eAndrade, Margareth SpanglerCota, André Barros2012-07-05T13:52:00Z2012-07-05T13:52:00Z2007OLIVEIRA, F. L. G. de; ANDRADE, M. S.; COTA, A. B. Kinetics of austenite formation during continuous heating in a low carbon steel. Materials Characterization, v. 58, n.3, p.256-261, mar. 2007. Disponível em: <http://www.sciencedirect.com/science/article/pii/S1044580306001264>. Acesso em: 05 jul. 2012.10445803http://www.repositorio.ufop.br/handle/123456789/978The kinetics and microstructural evolution of austenite formation in a low carbon steel, with initial microstructure composed of ferrite and pearlite, were studied during continuous heating, by using dilatometric analysis and measurements of microstructural parameters. The formation of austenite was observed to occur in two stages: (a) pearlite dissolution and (b) ferrite to austenite transformation. The critical temperatures of austenite formation in continuous heating increase with increasing heating rate, with greater influence on the finishing temperature of austenite formation. For both the 1 °C/s and 0.1 °C/s heating rates, the formation rate of austenite reaches a maximum at approximately the finishing temperature of pearlite dissolution, and the formation rate of austenite as a function of the temperature is greater at the higher heating rate.Continuous heating transformationKineticsLow carbon steelAustenite formationKinetics of austenite formation during continuous heating in a low carbon steel.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleO Periódico Materials Characterization concede permissão para depósito do artigo no Repositório Institucional da UFOP. Número da licença: 3345300960679.info:eu-repo/semantics/openAccessengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOPLICENSElicense.txtlicense.txttext/plain; charset=utf-81748http://www.repositorio.ufop.br/bitstream/123456789/978/5/license.txt8a4605be74aa9ea9d79846c1fba20a33MD55ORIGINALARTIGO_KineticsAusteniteFormation.pdfARTIGO_KineticsAusteniteFormation.pdfapplication/pdf1586561http://www.repositorio.ufop.br/bitstream/123456789/978/1/ARTIGO_KineticsAusteniteFormation.pdf246df76f7e4731c51b3a76c3bca91429MD51123456789/9782016-11-03 13:00:36.591oai:localhost: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Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332016-11-03T17:00:36Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false
dc.title.pt_BR.fl_str_mv Kinetics of austenite formation during continuous heating in a low carbon steel.
title Kinetics of austenite formation during continuous heating in a low carbon steel.
spellingShingle Kinetics of austenite formation during continuous heating in a low carbon steel.
Oliveira, Fernando Lucas Gonçalves e
Continuous heating transformation
Kinetics
Low carbon steel
Austenite formation
title_short Kinetics of austenite formation during continuous heating in a low carbon steel.
title_full Kinetics of austenite formation during continuous heating in a low carbon steel.
title_fullStr Kinetics of austenite formation during continuous heating in a low carbon steel.
title_full_unstemmed Kinetics of austenite formation during continuous heating in a low carbon steel.
title_sort Kinetics of austenite formation during continuous heating in a low carbon steel.
author Oliveira, Fernando Lucas Gonçalves e
author_facet Oliveira, Fernando Lucas Gonçalves e
Andrade, Margareth Spangler
Cota, André Barros
author_role author
author2 Andrade, Margareth Spangler
Cota, André Barros
author2_role author
author
dc.contributor.author.fl_str_mv Oliveira, Fernando Lucas Gonçalves e
Andrade, Margareth Spangler
Cota, André Barros
dc.subject.por.fl_str_mv Continuous heating transformation
Kinetics
Low carbon steel
Austenite formation
topic Continuous heating transformation
Kinetics
Low carbon steel
Austenite formation
description The kinetics and microstructural evolution of austenite formation in a low carbon steel, with initial microstructure composed of ferrite and pearlite, were studied during continuous heating, by using dilatometric analysis and measurements of microstructural parameters. The formation of austenite was observed to occur in two stages: (a) pearlite dissolution and (b) ferrite to austenite transformation. The critical temperatures of austenite formation in continuous heating increase with increasing heating rate, with greater influence on the finishing temperature of austenite formation. For both the 1 °C/s and 0.1 °C/s heating rates, the formation rate of austenite reaches a maximum at approximately the finishing temperature of pearlite dissolution, and the formation rate of austenite as a function of the temperature is greater at the higher heating rate.
publishDate 2007
dc.date.issued.fl_str_mv 2007
dc.date.accessioned.fl_str_mv 2012-07-05T13:52:00Z
dc.date.available.fl_str_mv 2012-07-05T13:52:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.citation.fl_str_mv OLIVEIRA, F. L. G. de; ANDRADE, M. S.; COTA, A. B. Kinetics of austenite formation during continuous heating in a low carbon steel. Materials Characterization, v. 58, n.3, p.256-261, mar. 2007. Disponível em: <http://www.sciencedirect.com/science/article/pii/S1044580306001264>. Acesso em: 05 jul. 2012.
dc.identifier.uri.fl_str_mv http://www.repositorio.ufop.br/handle/123456789/978
dc.identifier.issn.none.fl_str_mv 10445803
identifier_str_mv OLIVEIRA, F. L. G. de; ANDRADE, M. S.; COTA, A. B. Kinetics of austenite formation during continuous heating in a low carbon steel. Materials Characterization, v. 58, n.3, p.256-261, mar. 2007. Disponível em: <http://www.sciencedirect.com/science/article/pii/S1044580306001264>. Acesso em: 05 jul. 2012.
10445803
url http://www.repositorio.ufop.br/handle/123456789/978
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collection Repositório Institucional da UFOP
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