Effects of cellular growth on fatigue life of directionally solidified hypoeutectic Al-Fe Alloys

Detalhes bibliográficos
Autor(a) principal: Ribeiro,Pryscilla Liberato
Data de Publicação: 2014
Outros Autores: Silva,Bismarck Luiz, Silva,Wanderson Santana da, Spinelli,José E
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=S1516-14392014000300032
Resumo: Al-Fe hypoeutectic alloys are a family of casting alloys characterized by cell growth, low cost and appreciable formability. It is well known that fatigue strength is a requirement of prime importance considering the nature of load typically observed during operations involving the risers used in oil extraction. The aim of this study is to examine the influence of cell size and its intercellular phase distribution on the fatigue life (Nf) of the directionally solidified Al-0.5, 1.0 and 1.5wt% Fe alloys. A water-cooled vertical upward unidirectional solidification system was used to provide the castings. Microscopy light and SEM microscopy were used. It was found that fatigue life decreases as cell spacing (λ c) increases. Smaller cell spacing allows a homogeneous distribution of Al-Fe fibers to happen within the intercellular regions, which tends to improve the mentioned fatigue property. Hall-Petch type correlations [Nf= Nf0+A(λc -1/2)-B(λc -1); where A and B are constants] seems to be able to encompass the fatigue life variation along the Al-Fe alloys.
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spelling Effects of cellular growth on fatigue life of directionally solidified hypoeutectic Al-Fe AlloyssolidificationAl-Fe alloyfatigue lifeAl-Fe hypoeutectic alloys are a family of casting alloys characterized by cell growth, low cost and appreciable formability. It is well known that fatigue strength is a requirement of prime importance considering the nature of load typically observed during operations involving the risers used in oil extraction. The aim of this study is to examine the influence of cell size and its intercellular phase distribution on the fatigue life (Nf) of the directionally solidified Al-0.5, 1.0 and 1.5wt% Fe alloys. A water-cooled vertical upward unidirectional solidification system was used to provide the castings. Microscopy light and SEM microscopy were used. It was found that fatigue life decreases as cell spacing (λ c) increases. Smaller cell spacing allows a homogeneous distribution of Al-Fe fibers to happen within the intercellular regions, which tends to improve the mentioned fatigue property. Hall-Petch type correlations [Nf= Nf0+A(λc -1/2)-B(λc -1); where A and B are constants] seems to be able to encompass the fatigue life variation along the Al-Fe alloys.ABM, ABC, ABPol2014-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000300032Materials Research v.17 n.3 2014reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392014005000021info:eu-repo/semantics/openAccessRibeiro,Pryscilla LiberatoSilva,Bismarck LuizSilva,Wanderson Santana daSpinelli,José Eeng2014-06-18T00:00:00Zoai:scielo:S1516-14392014000300032Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2014-06-18T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false
dc.title.none.fl_str_mv Effects of cellular growth on fatigue life of directionally solidified hypoeutectic Al-Fe Alloys
title Effects of cellular growth on fatigue life of directionally solidified hypoeutectic Al-Fe Alloys
spellingShingle Effects of cellular growth on fatigue life of directionally solidified hypoeutectic Al-Fe Alloys
Ribeiro,Pryscilla Liberato
solidification
Al-Fe alloy
fatigue life
title_short Effects of cellular growth on fatigue life of directionally solidified hypoeutectic Al-Fe Alloys
title_full Effects of cellular growth on fatigue life of directionally solidified hypoeutectic Al-Fe Alloys
title_fullStr Effects of cellular growth on fatigue life of directionally solidified hypoeutectic Al-Fe Alloys
title_full_unstemmed Effects of cellular growth on fatigue life of directionally solidified hypoeutectic Al-Fe Alloys
title_sort Effects of cellular growth on fatigue life of directionally solidified hypoeutectic Al-Fe Alloys
author Ribeiro,Pryscilla Liberato
author_facet Ribeiro,Pryscilla Liberato
Silva,Bismarck Luiz
Silva,Wanderson Santana da
Spinelli,José E
author_role author
author2 Silva,Bismarck Luiz
Silva,Wanderson Santana da
Spinelli,José E
author2_role author
author
author
dc.contributor.author.fl_str_mv Ribeiro,Pryscilla Liberato
Silva,Bismarck Luiz
Silva,Wanderson Santana da
Spinelli,José E
dc.subject.por.fl_str_mv solidification
Al-Fe alloy
fatigue life
topic solidification
Al-Fe alloy
fatigue life
description Al-Fe hypoeutectic alloys are a family of casting alloys characterized by cell growth, low cost and appreciable formability. It is well known that fatigue strength is a requirement of prime importance considering the nature of load typically observed during operations involving the risers used in oil extraction. The aim of this study is to examine the influence of cell size and its intercellular phase distribution on the fatigue life (Nf) of the directionally solidified Al-0.5, 1.0 and 1.5wt% Fe alloys. A water-cooled vertical upward unidirectional solidification system was used to provide the castings. Microscopy light and SEM microscopy were used. It was found that fatigue life decreases as cell spacing (λ c) increases. Smaller cell spacing allows a homogeneous distribution of Al-Fe fibers to happen within the intercellular regions, which tends to improve the mentioned fatigue property. Hall-Petch type correlations [Nf= Nf0+A(λc -1/2)-B(λc -1); where A and B are constants] seems to be able to encompass the fatigue life variation along the Al-Fe alloys.
publishDate 2014
dc.date.none.fl_str_mv 2014-06-01
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=S1516-14392014000300032
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392014000300032
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1516-14392014005000021
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.17 n.3 2014
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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