On the mechanical behavior of an Al 7075 alloy deformed by asymmetrical and conventional rolling
Autor(a) principal: | |
---|---|
Data de Publicação: | 2019 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Matéria (Rio de Janeiro. Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762019000100316 |
Resumo: | ABSTRACT Samples of the Al 7075 naturally and artificially aged were processed by conventional and asymmetrical rolling with 5% of thickness reduction. The rolling processes were evaluated under room temperature and under warm condition (130°C). Mechanical properties were evaluated by uniaxial tensile and Vickers microhardness tests. Microstructure evolutions were followed by optical microscopy analysis. Naturally aged samples showed better yield strengthening under warm processing. Greater ultimate stress and ductility under room temperature processing was also noticed in naturally aged specimens. Artificially aged samples showed better mechanical properties under room temperature, softening under warm processing due to grain recovery process. Microhardness tests showed expected results for both rolling types, especially on asymmetrical rolling with the higher predictions were observed. Micrographs have shown no expressive grain changes or refinement although its flattening was observed. Precipitates were analyzed by EDS/SEM revealing the presence of MgZn2 and CuMgAl along the matrix that provides plastic strengthening. |
id |
RLAM-1_c0f971fb099e418998db55ad4165d68c |
---|---|
oai_identifier_str |
oai:scielo:S1517-70762019000100316 |
network_acronym_str |
RLAM-1 |
network_name_str |
Matéria (Rio de Janeiro. Online) |
repository_id_str |
|
spelling |
On the mechanical behavior of an Al 7075 alloy deformed by asymmetrical and conventional rollingAgingasymmetrical rollingconventional rollingmechanical behaviorAl 7075 alloyABSTRACT Samples of the Al 7075 naturally and artificially aged were processed by conventional and asymmetrical rolling with 5% of thickness reduction. The rolling processes were evaluated under room temperature and under warm condition (130°C). Mechanical properties were evaluated by uniaxial tensile and Vickers microhardness tests. Microstructure evolutions were followed by optical microscopy analysis. Naturally aged samples showed better yield strengthening under warm processing. Greater ultimate stress and ductility under room temperature processing was also noticed in naturally aged specimens. Artificially aged samples showed better mechanical properties under room temperature, softening under warm processing due to grain recovery process. Microhardness tests showed expected results for both rolling types, especially on asymmetrical rolling with the higher predictions were observed. Micrographs have shown no expressive grain changes or refinement although its flattening was observed. Precipitates were analyzed by EDS/SEM revealing the presence of MgZn2 and CuMgAl along the matrix that provides plastic strengthening.Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiroem cooperação com a Associação Brasileira do Hidrogênio, ABH22019-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762019000100316Matéria (Rio de Janeiro) v.24 n.1 2019reponame:Matéria (Rio de Janeiro. Online)instname:Matéria (Rio de Janeiro. Online)instacron:RLAM10.1590/s1517-707620190001.0625info:eu-repo/semantics/openAccessVale,Matheus Garcia doMedeiros,Neil deFonseca,Gláucio Soares daDiniz,Saulo BrincoPaula,Andersan dos SantosBrandão,Luiz Paulo Mendonçaeng2019-07-03T00:00:00Zoai:scielo:S1517-70762019000100316Revistahttp://www.materia.coppe.ufrj.br/https://old.scielo.br/oai/scielo-oai.php||materia@labh2.coppe.ufrj.br1517-70761517-7076opendoar:2019-07-03T00:00Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online)false |
dc.title.none.fl_str_mv |
On the mechanical behavior of an Al 7075 alloy deformed by asymmetrical and conventional rolling |
title |
On the mechanical behavior of an Al 7075 alloy deformed by asymmetrical and conventional rolling |
spellingShingle |
On the mechanical behavior of an Al 7075 alloy deformed by asymmetrical and conventional rolling Vale,Matheus Garcia do Aging asymmetrical rolling conventional rolling mechanical behavior Al 7075 alloy |
title_short |
On the mechanical behavior of an Al 7075 alloy deformed by asymmetrical and conventional rolling |
title_full |
On the mechanical behavior of an Al 7075 alloy deformed by asymmetrical and conventional rolling |
title_fullStr |
On the mechanical behavior of an Al 7075 alloy deformed by asymmetrical and conventional rolling |
title_full_unstemmed |
On the mechanical behavior of an Al 7075 alloy deformed by asymmetrical and conventional rolling |
title_sort |
On the mechanical behavior of an Al 7075 alloy deformed by asymmetrical and conventional rolling |
author |
Vale,Matheus Garcia do |
author_facet |
Vale,Matheus Garcia do Medeiros,Neil de Fonseca,Gláucio Soares da Diniz,Saulo Brinco Paula,Andersan dos Santos Brandão,Luiz Paulo Mendonça |
author_role |
author |
author2 |
Medeiros,Neil de Fonseca,Gláucio Soares da Diniz,Saulo Brinco Paula,Andersan dos Santos Brandão,Luiz Paulo Mendonça |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
Vale,Matheus Garcia do Medeiros,Neil de Fonseca,Gláucio Soares da Diniz,Saulo Brinco Paula,Andersan dos Santos Brandão,Luiz Paulo Mendonça |
dc.subject.por.fl_str_mv |
Aging asymmetrical rolling conventional rolling mechanical behavior Al 7075 alloy |
topic |
Aging asymmetrical rolling conventional rolling mechanical behavior Al 7075 alloy |
description |
ABSTRACT Samples of the Al 7075 naturally and artificially aged were processed by conventional and asymmetrical rolling with 5% of thickness reduction. The rolling processes were evaluated under room temperature and under warm condition (130°C). Mechanical properties were evaluated by uniaxial tensile and Vickers microhardness tests. Microstructure evolutions were followed by optical microscopy analysis. Naturally aged samples showed better yield strengthening under warm processing. Greater ultimate stress and ductility under room temperature processing was also noticed in naturally aged specimens. Artificially aged samples showed better mechanical properties under room temperature, softening under warm processing due to grain recovery process. Microhardness tests showed expected results for both rolling types, especially on asymmetrical rolling with the higher predictions were observed. Micrographs have shown no expressive grain changes or refinement although its flattening was observed. Precipitates were analyzed by EDS/SEM revealing the presence of MgZn2 and CuMgAl along the matrix that provides plastic strengthening. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-01-01 |
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=S1517-70762019000100316 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762019000100316 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/s1517-707620190001.0625 |
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 |
Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro em cooperação com a Associação Brasileira do Hidrogênio, ABH2 |
publisher.none.fl_str_mv |
Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro em cooperação com a Associação Brasileira do Hidrogênio, ABH2 |
dc.source.none.fl_str_mv |
Matéria (Rio de Janeiro) v.24 n.1 2019 reponame:Matéria (Rio de Janeiro. Online) instname:Matéria (Rio de Janeiro. Online) instacron:RLAM |
instname_str |
Matéria (Rio de Janeiro. Online) |
instacron_str |
RLAM |
institution |
RLAM |
reponame_str |
Matéria (Rio de Janeiro. Online) |
collection |
Matéria (Rio de Janeiro. Online) |
repository.name.fl_str_mv |
Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online) |
repository.mail.fl_str_mv |
||materia@labh2.coppe.ufrj.br |
_version_ |
1752126691611770880 |