Microstructural Path Analysis of Martensite Dimensions in FeNiC and FeC Alloys

Detalhes bibliográficos
Autor(a) principal: Guimarães,José Roberto Costa
Data de Publicação: 2015
Outros Autores: Rios,Paulo Rangel
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=S1516-14392015000300595
Resumo: The properties of steels that undergo martensite transformation after or during processing depend on characteristics and arrangement of martensite units within the microstructure. In this work, the global microstructure descriptors of martensite transformation are related to the individual dimensions of the martensite units, the "intrinsic dimensions", – radius, thickness and aspect ratio – compensated for interactions among those units. In other words, the dimensions a martensite unit would have if it grew without impingement. This is accomplished by means of the microstructural path method. The methodology was applied to experimental data of martensite transformation in FeNiC and FeC alloys. The analysis of martensite dimensions permitted observing that the microstructural path of martensite includes a thermally activated step. We conclude that this thermally activated step does not mean that martensite itself has thermally activated growth step but that arrest of the martensite thickening process, owing to dislocation interaction with the interface motion may be thermally activated.
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spelling Microstructural Path Analysis of Martensite Dimensions in FeNiC and FeC Alloysmartensitic phase transformationmicrostructureanalytical methodsThe properties of steels that undergo martensite transformation after or during processing depend on characteristics and arrangement of martensite units within the microstructure. In this work, the global microstructure descriptors of martensite transformation are related to the individual dimensions of the martensite units, the "intrinsic dimensions", – radius, thickness and aspect ratio – compensated for interactions among those units. In other words, the dimensions a martensite unit would have if it grew without impingement. This is accomplished by means of the microstructural path method. The methodology was applied to experimental data of martensite transformation in FeNiC and FeC alloys. The analysis of martensite dimensions permitted observing that the microstructural path of martensite includes a thermally activated step. We conclude that this thermally activated step does not mean that martensite itself has thermally activated growth step but that arrest of the martensite thickening process, owing to dislocation interaction with the interface motion may be thermally activated.ABM, ABC, ABPol2015-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392015000300595Materials Research v.18 n.3 2015reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1516-1439.000215info:eu-repo/semantics/openAccessGuimarães,José Roberto CostaRios,Paulo Rangeleng2015-08-04T00:00:00Zoai:scielo:S1516-14392015000300595Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2015-08-04T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Microstructural Path Analysis of Martensite Dimensions in FeNiC and FeC Alloys
title Microstructural Path Analysis of Martensite Dimensions in FeNiC and FeC Alloys
spellingShingle Microstructural Path Analysis of Martensite Dimensions in FeNiC and FeC Alloys
Guimarães,José Roberto Costa
martensitic phase transformation
microstructure
analytical methods
title_short Microstructural Path Analysis of Martensite Dimensions in FeNiC and FeC Alloys
title_full Microstructural Path Analysis of Martensite Dimensions in FeNiC and FeC Alloys
title_fullStr Microstructural Path Analysis of Martensite Dimensions in FeNiC and FeC Alloys
title_full_unstemmed Microstructural Path Analysis of Martensite Dimensions in FeNiC and FeC Alloys
title_sort Microstructural Path Analysis of Martensite Dimensions in FeNiC and FeC Alloys
author Guimarães,José Roberto Costa
author_facet Guimarães,José Roberto Costa
Rios,Paulo Rangel
author_role author
author2 Rios,Paulo Rangel
author2_role author
dc.contributor.author.fl_str_mv Guimarães,José Roberto Costa
Rios,Paulo Rangel
dc.subject.por.fl_str_mv martensitic phase transformation
microstructure
analytical methods
topic martensitic phase transformation
microstructure
analytical methods
description The properties of steels that undergo martensite transformation after or during processing depend on characteristics and arrangement of martensite units within the microstructure. In this work, the global microstructure descriptors of martensite transformation are related to the individual dimensions of the martensite units, the "intrinsic dimensions", – radius, thickness and aspect ratio – compensated for interactions among those units. In other words, the dimensions a martensite unit would have if it grew without impingement. This is accomplished by means of the microstructural path method. The methodology was applied to experimental data of martensite transformation in FeNiC and FeC alloys. The analysis of martensite dimensions permitted observing that the microstructural path of martensite includes a thermally activated step. We conclude that this thermally activated step does not mean that martensite itself has thermally activated growth step but that arrest of the martensite thickening process, owing to dislocation interaction with the interface motion may be thermally activated.
publishDate 2015
dc.date.none.fl_str_mv 2015-06-01
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=S1516-14392015000300595
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392015000300595
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1516-1439.000215
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.18 n.3 2015
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
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