Autocatalysis, Entropic Aspects and the Martensite Transformation Curve in Iron-Base Alloys

Detalhes bibliográficos
Autor(a) principal: Guimarães,José Roberto Costa
Data de Publicação: 2017
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=S1516-14392017000100271
Resumo: This study advances a methodology that consolidates the description of time-dependent (isothermal) as well as time-independent (athermal) martensitic transformation curves. Our model is applied in an extended 3-space, thus permitting inclusion of the effects of autocatalysis on nucleation to be distinguished from the initiation of the transformation, as influenced by entropic barriers. Autocatalysis is then considered as a mechanism for circumventing the effect of the latter. The utility of this proposed mathematical formalism was validated with a database consisting of seven different steels that transform athermally or isothermally.
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spelling Autocatalysis, Entropic Aspects and the Martensite Transformation Curve in Iron-Base Alloysmartensitic transformationsphase transformationskineticsathermal martensiteisothermal martensiteThis study advances a methodology that consolidates the description of time-dependent (isothermal) as well as time-independent (athermal) martensitic transformation curves. Our model is applied in an extended 3-space, thus permitting inclusion of the effects of autocatalysis on nucleation to be distinguished from the initiation of the transformation, as influenced by entropic barriers. Autocatalysis is then considered as a mechanism for circumventing the effect of the latter. The utility of this proposed mathematical formalism was validated with a database consisting of seven different steels that transform athermally or isothermally.ABM, ABC, ABPol2017-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000100271Materials Research v.20 n.1 2017reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2016-0462info:eu-repo/semantics/openAccessGuimarães,José Roberto CostaRios,Paulo Rangeleng2017-03-22T00:00:00Zoai:scielo:S1516-14392017000100271Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2017-03-22T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Autocatalysis, Entropic Aspects and the Martensite Transformation Curve in Iron-Base Alloys
title Autocatalysis, Entropic Aspects and the Martensite Transformation Curve in Iron-Base Alloys
spellingShingle Autocatalysis, Entropic Aspects and the Martensite Transformation Curve in Iron-Base Alloys
Guimarães,José Roberto Costa
martensitic transformations
phase transformations
kinetics
athermal martensite
isothermal martensite
title_short Autocatalysis, Entropic Aspects and the Martensite Transformation Curve in Iron-Base Alloys
title_full Autocatalysis, Entropic Aspects and the Martensite Transformation Curve in Iron-Base Alloys
title_fullStr Autocatalysis, Entropic Aspects and the Martensite Transformation Curve in Iron-Base Alloys
title_full_unstemmed Autocatalysis, Entropic Aspects and the Martensite Transformation Curve in Iron-Base Alloys
title_sort Autocatalysis, Entropic Aspects and the Martensite Transformation Curve in Iron-Base 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 transformations
phase transformations
kinetics
athermal martensite
isothermal martensite
topic martensitic transformations
phase transformations
kinetics
athermal martensite
isothermal martensite
description This study advances a methodology that consolidates the description of time-dependent (isothermal) as well as time-independent (athermal) martensitic transformation curves. Our model is applied in an extended 3-space, thus permitting inclusion of the effects of autocatalysis on nucleation to be distinguished from the initiation of the transformation, as influenced by entropic barriers. Autocatalysis is then considered as a mechanism for circumventing the effect of the latter. The utility of this proposed mathematical formalism was validated with a database consisting of seven different steels that transform athermally or isothermally.
publishDate 2017
dc.date.none.fl_str_mv 2017-02-01
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=S1516-14392017000100271
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392017000100271
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1980-5373-mr-2016-0462
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.20 n.1 2017
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_ 1754212670555291648

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