Microstructural Evolution and Mechanical Properties of As-Cast Mg-12Zn Alloys with Different Al Additions
Autor(a) principal: | |
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Data de Publicação: | 2020 |
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=S1516-14392020000100217 |
Resumo: | Abstract In this study, Mg-12Zn magnesium alloys alloyed with Al additions (0, 2, 4, 6, 8 and 10, wt.%) were fabricated by permanent mould casting. The Al content on their microstructure and mechanical properties were systematically examined with an optical microscope (OM), a scanning electron microscope (SEM), an X-ray diffractometer (XRD) and mechanical tests at room temperature. The experimental results indicate that the microstructure of the alloys is mainly composed of α-Mg and semi-continuous or continuous eutectic phases. A higher addition of Al (≥6%) causes the generation of the Mg17Al12 phases. Notably, the grain sizes of the alloys gradually decrease, whilst the partial morphology of some eutectic phases is modified into lamellar structure with increasing of Al addition. Mechanical properties characterization manifested that, the alloys with different Al additions reveal distinguishing tensile properties. Among them, the alloy with 4% Al provides an excellent mechanical properties, i.e., a UTS of 206 MPa and an EL of 7.92%, which is respectively higher 28 MPa and 1.08% than that of ZA120 alloy. The deterioration in the tensile properties for the higher Al-bearing alloys is possibly related to the lamellar structure, coarse and continuous net-work morphology and β-Mg17Al12 phases, respectively. |
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Microstructural Evolution and Mechanical Properties of As-Cast Mg-12Zn Alloys with Different Al AdditionsMg-12Zn magnesium alloyAl additionmicrostructuremechanical propertyβ-Mg17Al12 phaseAbstract In this study, Mg-12Zn magnesium alloys alloyed with Al additions (0, 2, 4, 6, 8 and 10, wt.%) were fabricated by permanent mould casting. The Al content on their microstructure and mechanical properties were systematically examined with an optical microscope (OM), a scanning electron microscope (SEM), an X-ray diffractometer (XRD) and mechanical tests at room temperature. The experimental results indicate that the microstructure of the alloys is mainly composed of α-Mg and semi-continuous or continuous eutectic phases. A higher addition of Al (≥6%) causes the generation of the Mg17Al12 phases. Notably, the grain sizes of the alloys gradually decrease, whilst the partial morphology of some eutectic phases is modified into lamellar structure with increasing of Al addition. Mechanical properties characterization manifested that, the alloys with different Al additions reveal distinguishing tensile properties. Among them, the alloy with 4% Al provides an excellent mechanical properties, i.e., a UTS of 206 MPa and an EL of 7.92%, which is respectively higher 28 MPa and 1.08% than that of ZA120 alloy. The deterioration in the tensile properties for the higher Al-bearing alloys is possibly related to the lamellar structure, coarse and continuous net-work morphology and β-Mg17Al12 phases, respectively.ABM, ABC, ABPol2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392020000100217Materials Research v.23 n.1 2020reponame:Materials research (São Carlos. Online)instname:Universidade Federal de São Carlos (UFSCAR)instacron:ABM ABC ABPOL10.1590/1980-5373-mr-2019-0582info:eu-repo/semantics/openAccessZhang,YuLi,MingYang,Wen-LongWang,Zong-GangWang,Xue-Zhieng2020-04-15T00:00:00Zoai:scielo:S1516-14392020000100217Revistahttp://www.scielo.br/mrPUBhttps://old.scielo.br/oai/scielo-oai.phpdedz@power.ufscar.br1980-53731516-1439opendoar:2020-04-15T00:00Materials research (São Carlos. Online) - Universidade Federal de São Carlos (UFSCAR)false |
dc.title.none.fl_str_mv |
Microstructural Evolution and Mechanical Properties of As-Cast Mg-12Zn Alloys with Different Al Additions |
title |
Microstructural Evolution and Mechanical Properties of As-Cast Mg-12Zn Alloys with Different Al Additions |
spellingShingle |
Microstructural Evolution and Mechanical Properties of As-Cast Mg-12Zn Alloys with Different Al Additions Zhang,Yu Mg-12Zn magnesium alloy Al addition microstructure mechanical property β-Mg17Al12 phase |
title_short |
Microstructural Evolution and Mechanical Properties of As-Cast Mg-12Zn Alloys with Different Al Additions |
title_full |
Microstructural Evolution and Mechanical Properties of As-Cast Mg-12Zn Alloys with Different Al Additions |
title_fullStr |
Microstructural Evolution and Mechanical Properties of As-Cast Mg-12Zn Alloys with Different Al Additions |
title_full_unstemmed |
Microstructural Evolution and Mechanical Properties of As-Cast Mg-12Zn Alloys with Different Al Additions |
title_sort |
Microstructural Evolution and Mechanical Properties of As-Cast Mg-12Zn Alloys with Different Al Additions |
author |
Zhang,Yu |
author_facet |
Zhang,Yu Li,Ming Yang,Wen-Long Wang,Zong-Gang Wang,Xue-Zhi |
author_role |
author |
author2 |
Li,Ming Yang,Wen-Long Wang,Zong-Gang Wang,Xue-Zhi |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Zhang,Yu Li,Ming Yang,Wen-Long Wang,Zong-Gang Wang,Xue-Zhi |
dc.subject.por.fl_str_mv |
Mg-12Zn magnesium alloy Al addition microstructure mechanical property β-Mg17Al12 phase |
topic |
Mg-12Zn magnesium alloy Al addition microstructure mechanical property β-Mg17Al12 phase |
description |
Abstract In this study, Mg-12Zn magnesium alloys alloyed with Al additions (0, 2, 4, 6, 8 and 10, wt.%) were fabricated by permanent mould casting. The Al content on their microstructure and mechanical properties were systematically examined with an optical microscope (OM), a scanning electron microscope (SEM), an X-ray diffractometer (XRD) and mechanical tests at room temperature. The experimental results indicate that the microstructure of the alloys is mainly composed of α-Mg and semi-continuous or continuous eutectic phases. A higher addition of Al (≥6%) causes the generation of the Mg17Al12 phases. Notably, the grain sizes of the alloys gradually decrease, whilst the partial morphology of some eutectic phases is modified into lamellar structure with increasing of Al addition. Mechanical properties characterization manifested that, the alloys with different Al additions reveal distinguishing tensile properties. Among them, the alloy with 4% Al provides an excellent mechanical properties, i.e., a UTS of 206 MPa and an EL of 7.92%, which is respectively higher 28 MPa and 1.08% than that of ZA120 alloy. The deterioration in the tensile properties for the higher Al-bearing alloys is possibly related to the lamellar structure, coarse and continuous net-work morphology and β-Mg17Al12 phases, respectively. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 |
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=S1516-14392020000100217 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392020000100217 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1980-5373-mr-2019-0582 |
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.23 n.1 2020 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_ |
1754212676861427712 |