Influence of ultrasonic melt treatment on microstructure and mechanical properties of AlSi9Cu3 alloy

Detalhes bibliográficos
Autor(a) principal: Puga, Hélder
Data de Publicação: 2011
Outros Autores: Costa, Sónia, Barbosa, J., S. Ribeiro, Carlos, Prokic, Miodrag
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/15739
Resumo: A novel MMM (Multi-frequency, Multimode, Modulated) ultrasonic (US) technology was used to refine the as cast microstructure and improve the mechanical properties of a AlSi9Cu3 alloy. Ultrasonic vibration was isothermally applied to the melt for 120 seconds at different temperatures slightly above the liquidus temperature of the alloy, using different electric power values, before pouring into a metallic mould. The microstructure of the cast samples was characterized by optical and scanning electron microscopy and energy dispersive spectrometry. Ultrasonic vibration promoted the formation of small -Al globular grains, changed the size and morphology of intermetallic compounds and distributed them uniformly throughout the castings. Ultimate Tensile Strength and Strain were increased to 332 MPa and 2.9% respectively, which are 50% and 480% higher than the values obtained for castings produced without vibration. The microstructure morphology and the alloy mechanical properties were found to depend on the electric power and the melt temperature, and by using a suitable combination of these parameters it is possible to achieve high refinement efficiency by treating the melts in the liquid state.
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spelling Influence of ultrasonic melt treatment on microstructure and mechanical properties of AlSi9Cu3 alloyaluminium alloyscastingrefinementultrasoundAluminum alloysScience & TechnologyA novel MMM (Multi-frequency, Multimode, Modulated) ultrasonic (US) technology was used to refine the as cast microstructure and improve the mechanical properties of a AlSi9Cu3 alloy. Ultrasonic vibration was isothermally applied to the melt for 120 seconds at different temperatures slightly above the liquidus temperature of the alloy, using different electric power values, before pouring into a metallic mould. The microstructure of the cast samples was characterized by optical and scanning electron microscopy and energy dispersive spectrometry. Ultrasonic vibration promoted the formation of small -Al globular grains, changed the size and morphology of intermetallic compounds and distributed them uniformly throughout the castings. Ultimate Tensile Strength and Strain were increased to 332 MPa and 2.9% respectively, which are 50% and 480% higher than the values obtained for castings produced without vibration. The microstructure morphology and the alloy mechanical properties were found to depend on the electric power and the melt temperature, and by using a suitable combination of these parameters it is possible to achieve high refinement efficiency by treating the melts in the liquid state.Elsevier ScienceUniversidade do MinhoPuga, HélderCosta, SóniaBarbosa, J.S. Ribeiro, CarlosProkic, Miodrag20112011-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/15739eng0924-013610.1016/j.jmatprotec.2011.05.012The original publication is available at www.sciencedirect.cominfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:49:28Zoai:repositorium.sdum.uminho.pt:1822/15739Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:47:57.656606Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Influence of ultrasonic melt treatment on microstructure and mechanical properties of AlSi9Cu3 alloy
title Influence of ultrasonic melt treatment on microstructure and mechanical properties of AlSi9Cu3 alloy
spellingShingle Influence of ultrasonic melt treatment on microstructure and mechanical properties of AlSi9Cu3 alloy
Puga, Hélder
aluminium alloys
casting
refinement
ultrasound
Aluminum alloys
Science & Technology
title_short Influence of ultrasonic melt treatment on microstructure and mechanical properties of AlSi9Cu3 alloy
title_full Influence of ultrasonic melt treatment on microstructure and mechanical properties of AlSi9Cu3 alloy
title_fullStr Influence of ultrasonic melt treatment on microstructure and mechanical properties of AlSi9Cu3 alloy
title_full_unstemmed Influence of ultrasonic melt treatment on microstructure and mechanical properties of AlSi9Cu3 alloy
title_sort Influence of ultrasonic melt treatment on microstructure and mechanical properties of AlSi9Cu3 alloy
author Puga, Hélder
author_facet Puga, Hélder
Costa, Sónia
Barbosa, J.
S. Ribeiro, Carlos
Prokic, Miodrag
author_role author
author2 Costa, Sónia
Barbosa, J.
S. Ribeiro, Carlos
Prokic, Miodrag
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Puga, Hélder
Costa, Sónia
Barbosa, J.
S. Ribeiro, Carlos
Prokic, Miodrag
dc.subject.por.fl_str_mv aluminium alloys
casting
refinement
ultrasound
Aluminum alloys
Science & Technology
topic aluminium alloys
casting
refinement
ultrasound
Aluminum alloys
Science & Technology
description A novel MMM (Multi-frequency, Multimode, Modulated) ultrasonic (US) technology was used to refine the as cast microstructure and improve the mechanical properties of a AlSi9Cu3 alloy. Ultrasonic vibration was isothermally applied to the melt for 120 seconds at different temperatures slightly above the liquidus temperature of the alloy, using different electric power values, before pouring into a metallic mould. The microstructure of the cast samples was characterized by optical and scanning electron microscopy and energy dispersive spectrometry. Ultrasonic vibration promoted the formation of small -Al globular grains, changed the size and morphology of intermetallic compounds and distributed them uniformly throughout the castings. Ultimate Tensile Strength and Strain were increased to 332 MPa and 2.9% respectively, which are 50% and 480% higher than the values obtained for castings produced without vibration. The microstructure morphology and the alloy mechanical properties were found to depend on the electric power and the melt temperature, and by using a suitable combination of these parameters it is possible to achieve high refinement efficiency by treating the melts in the liquid state.
publishDate 2011
dc.date.none.fl_str_mv 2011
2011-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/15739
url http://hdl.handle.net/1822/15739
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0924-0136
10.1016/j.jmatprotec.2011.05.012
The original publication is available at www.sciencedirect.com
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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