Effect of heat treatment on some mechanical properties of 7075 aluminium alloy
Autor(a) principal: | |
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Data de Publicação: | 2013 |
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=S1516-14392013000100024 |
Resumo: | This paper reports the effects of annealing and age hardening heat treatments on the microstructural morphology and mechanical properties of 7075 Al alloy. The material was cast in the form of round cylindrical rods inside green sand mould from where some samples were rapidly cooled by early knockout and others gradually cooled to room temperature. From the samples that were gradually cooled some were annealed while others were age hardened. Both the as-cast in each category and heat treated samples were subjected to some mechanical tests and the morphology of the resulting microstructures were characterised by optical microscopy. From the results obtained there is formation of microsegregations of MgZn2 during gradual solidification which was not present during rapid cooling. It was also found out that age hardening and annealing heat treatment operation eliminated these microsegregations and improve mechanical properties of 7075 Al alloy. It is concluded that microsegregation can be eliminated by rapid solidification and appropriate heat treatment process. |
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Materials research (São Carlos. Online) |
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|
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Effect of heat treatment on some mechanical properties of 7075 aluminium alloy7075 aluminiummicrosegregationprecipitation hardeningannealingmagnesium alloystrengthThis paper reports the effects of annealing and age hardening heat treatments on the microstructural morphology and mechanical properties of 7075 Al alloy. The material was cast in the form of round cylindrical rods inside green sand mould from where some samples were rapidly cooled by early knockout and others gradually cooled to room temperature. From the samples that were gradually cooled some were annealed while others were age hardened. Both the as-cast in each category and heat treated samples were subjected to some mechanical tests and the morphology of the resulting microstructures were characterised by optical microscopy. From the results obtained there is formation of microsegregations of MgZn2 during gradual solidification which was not present during rapid cooling. It was also found out that age hardening and annealing heat treatment operation eliminated these microsegregations and improve mechanical properties of 7075 Al alloy. It is concluded that microsegregation can be eliminated by rapid solidification and appropriate heat treatment process.ABM, ABC, ABPol2013-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000100024Materials Research v.16 n.1 2013reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/S1516-14392012005000167info:eu-repo/semantics/openAccessIsadare,Adeyemi DayoAremo,BolajiAdeoye,Mosobalaje OyebamijiOlawale,Oluyemi JohnShittu,Moshood Dehindeeng2013-01-31T00:00:00Zoai:scielo:S1516-14392013000100024Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2013-01-31T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
Effect of heat treatment on some mechanical properties of 7075 aluminium alloy |
title |
Effect of heat treatment on some mechanical properties of 7075 aluminium alloy |
spellingShingle |
Effect of heat treatment on some mechanical properties of 7075 aluminium alloy Isadare,Adeyemi Dayo 7075 aluminium microsegregation precipitation hardening annealing magnesium alloy strength |
title_short |
Effect of heat treatment on some mechanical properties of 7075 aluminium alloy |
title_full |
Effect of heat treatment on some mechanical properties of 7075 aluminium alloy |
title_fullStr |
Effect of heat treatment on some mechanical properties of 7075 aluminium alloy |
title_full_unstemmed |
Effect of heat treatment on some mechanical properties of 7075 aluminium alloy |
title_sort |
Effect of heat treatment on some mechanical properties of 7075 aluminium alloy |
author |
Isadare,Adeyemi Dayo |
author_facet |
Isadare,Adeyemi Dayo Aremo,Bolaji Adeoye,Mosobalaje Oyebamiji Olawale,Oluyemi John Shittu,Moshood Dehinde |
author_role |
author |
author2 |
Aremo,Bolaji Adeoye,Mosobalaje Oyebamiji Olawale,Oluyemi John Shittu,Moshood Dehinde |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Isadare,Adeyemi Dayo Aremo,Bolaji Adeoye,Mosobalaje Oyebamiji Olawale,Oluyemi John Shittu,Moshood Dehinde |
dc.subject.por.fl_str_mv |
7075 aluminium microsegregation precipitation hardening annealing magnesium alloy strength |
topic |
7075 aluminium microsegregation precipitation hardening annealing magnesium alloy strength |
description |
This paper reports the effects of annealing and age hardening heat treatments on the microstructural morphology and mechanical properties of 7075 Al alloy. The material was cast in the form of round cylindrical rods inside green sand mould from where some samples were rapidly cooled by early knockout and others gradually cooled to room temperature. From the samples that were gradually cooled some were annealed while others were age hardened. Both the as-cast in each category and heat treated samples were subjected to some mechanical tests and the morphology of the resulting microstructures were characterised by optical microscopy. From the results obtained there is formation of microsegregations of MgZn2 during gradual solidification which was not present during rapid cooling. It was also found out that age hardening and annealing heat treatment operation eliminated these microsegregations and improve mechanical properties of 7075 Al alloy. It is concluded that microsegregation can be eliminated by rapid solidification and appropriate heat treatment process. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-02-01 |
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=S1516-14392013000100024 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392013000100024 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S1516-14392012005000167 |
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.16 n.1 2013 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_ |
1754212662045048832 |