The influence of melt convection on dendritic spacing of downward unsteady-state directionally solidified Sn-Pb alloys
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | , |
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=S1516-14392006000100011 |
Resumo: | Microstructures are the strategic link between materials processing and materials behavior. A dendritic structure is the most frequently observed pattern of solidified alloys. The microstructural scales of dendrites, such as primary and secondary arm spacings, control the segregation profiles and the formation of secondary phases within interdendritic regions, determine the properties of cast structures. In this work, the influence of thermosolutal convection on dendrite arm spacings is experimentally examined in the downward vertical unsteady-state directional solidification of Sn-Pb hypoeutectic alloys. The experimental observations are compared not only with the main predictive theoretical models for dendritic spacings but also with experimental results obtained for Sn-Pb alloys solidified vertically upwards. Primary dendritic arm spacings have been affected by the direction of growth, decreasing in conditions of downward vertical solidification when compared with those grown vertically upwards. Further, the unsteady-state lambda1 predictive models did not generate the experimental observations. |
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Materials research (São Carlos. Online) |
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The influence of melt convection on dendritic spacing of downward unsteady-state directionally solidified Sn-Pb alloysdownward unidirectional solidificationdendritic spacingsdendritic growth modelsSn-Pb alloysMicrostructures are the strategic link between materials processing and materials behavior. A dendritic structure is the most frequently observed pattern of solidified alloys. The microstructural scales of dendrites, such as primary and secondary arm spacings, control the segregation profiles and the formation of secondary phases within interdendritic regions, determine the properties of cast structures. In this work, the influence of thermosolutal convection on dendrite arm spacings is experimentally examined in the downward vertical unsteady-state directional solidification of Sn-Pb hypoeutectic alloys. The experimental observations are compared not only with the main predictive theoretical models for dendritic spacings but also with experimental results obtained for Sn-Pb alloys solidified vertically upwards. Primary dendritic arm spacings have been affected by the direction of growth, decreasing in conditions of downward vertical solidification when compared with those grown vertically upwards. Further, the unsteady-state lambda1 predictive models did not generate the experimental observations.ABM, ABC, ABPol2006-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000100011Materials Research v.9 n.1 2006reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392006000100011info:eu-repo/semantics/openAccessSpinelli,José EduardoRocha,Otávio Fernandes LimaGarcia,Amaurieng2006-04-10T00:00:00Zoai:scielo:S1516-14392006000100011Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2006-04-10T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
The influence of melt convection on dendritic spacing of downward unsteady-state directionally solidified Sn-Pb alloys |
title |
The influence of melt convection on dendritic spacing of downward unsteady-state directionally solidified Sn-Pb alloys |
spellingShingle |
The influence of melt convection on dendritic spacing of downward unsteady-state directionally solidified Sn-Pb alloys Spinelli,José Eduardo downward unidirectional solidification dendritic spacings dendritic growth models Sn-Pb alloys |
title_short |
The influence of melt convection on dendritic spacing of downward unsteady-state directionally solidified Sn-Pb alloys |
title_full |
The influence of melt convection on dendritic spacing of downward unsteady-state directionally solidified Sn-Pb alloys |
title_fullStr |
The influence of melt convection on dendritic spacing of downward unsteady-state directionally solidified Sn-Pb alloys |
title_full_unstemmed |
The influence of melt convection on dendritic spacing of downward unsteady-state directionally solidified Sn-Pb alloys |
title_sort |
The influence of melt convection on dendritic spacing of downward unsteady-state directionally solidified Sn-Pb alloys |
author |
Spinelli,José Eduardo |
author_facet |
Spinelli,José Eduardo Rocha,Otávio Fernandes Lima Garcia,Amauri |
author_role |
author |
author2 |
Rocha,Otávio Fernandes Lima Garcia,Amauri |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Spinelli,José Eduardo Rocha,Otávio Fernandes Lima Garcia,Amauri |
dc.subject.por.fl_str_mv |
downward unidirectional solidification dendritic spacings dendritic growth models Sn-Pb alloys |
topic |
downward unidirectional solidification dendritic spacings dendritic growth models Sn-Pb alloys |
description |
Microstructures are the strategic link between materials processing and materials behavior. A dendritic structure is the most frequently observed pattern of solidified alloys. The microstructural scales of dendrites, such as primary and secondary arm spacings, control the segregation profiles and the formation of secondary phases within interdendritic regions, determine the properties of cast structures. In this work, the influence of thermosolutal convection on dendrite arm spacings is experimentally examined in the downward vertical unsteady-state directional solidification of Sn-Pb hypoeutectic alloys. The experimental observations are compared not only with the main predictive theoretical models for dendritic spacings but also with experimental results obtained for Sn-Pb alloys solidified vertically upwards. Primary dendritic arm spacings have been affected by the direction of growth, decreasing in conditions of downward vertical solidification when compared with those grown vertically upwards. Further, the unsteady-state lambda1 predictive models did not generate the experimental observations. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006-03-01 |
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=S1516-14392006000100011 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392006000100011 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-14392006000100011 |
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.9 n.1 2006 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_ |
1754212658165317632 |