The role of acoustic pressure during solidification of AlSi7Mg alloy in sand mold casting

Detalhes bibliográficos
Autor(a) principal: Puga, Hélder
Data de Publicação: 2019
Outros Autores: Barbosa, J., Carneiro, Vítor Hugo Pimenta
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/60294
Resumo: New alloy processes have been developed and casting techniques are continuously evolving. Such constant development implies a consequent development and optimization of melt processing and treatment. The present work proposes a method for studying the influence of acoustic pressure in the overall refinement of sand cast aluminum alloys, using and correlating experimental and numerical approaches. It is shown that the refinement/modification of the α-Al matrix is a consequence of the acoustic activation caused in the liquid metal directly below the face of the acoustic radiator. Near the feeder, there is a clear homogeneity in the morphology of the α-Al with respect to grain size and grain circularity. However, the damping of acoustic pressure as the melt is moved away from the feeder increases and the influence of ultrasound is reduced, even though the higher cooling rate seems to compensate for this effect.
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spelling The role of acoustic pressure during solidification of AlSi7Mg alloy in sand mold castingAluminum alloySand casting: Acoustic radiatorUltrasonic melt refinementα-Al grain sizeNew alloy processes have been developed and casting techniques are continuously evolving. Such constant development implies a consequent development and optimization of melt processing and treatment. The present work proposes a method for studying the influence of acoustic pressure in the overall refinement of sand cast aluminum alloys, using and correlating experimental and numerical approaches. It is shown that the refinement/modification of the α-Al matrix is a consequence of the acoustic activation caused in the liquid metal directly below the face of the acoustic radiator. Near the feeder, there is a clear homogeneity in the morphology of the α-Al with respect to grain size and grain circularity. However, the damping of acoustic pressure as the melt is moved away from the feeder increases and the influence of ultrasound is reduced, even though the higher cooling rate seems to compensate for this effect.This work was supported by FCT funding through the project PTDC/EMEEME/30967/2017 (NORTE-0145-FEDER-030967) and by FEDER funding through COMPETE 2020, NORTE2020, PORTUGAL2020 – Programa Operacional Competitividade e Internacionalização (POCI). Additionally, this work was supported by FCT with the reference project UID/EEA/04436/2019.info:eu-repo/semantics/publishedVersionMultidisciplinary Digital Publishing InstituteUniversidade do MinhoPuga, HélderBarbosa, J.Carneiro, Vítor Hugo Pimenta2019-04-272019-04-27T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/60294eng2075-470110.3390/met9050490info: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:RCAAP2023-07-21T12:02:20Zoai:repositorium.sdum.uminho.pt:1822/60294Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:52:17.662087Repositório 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 The role of acoustic pressure during solidification of AlSi7Mg alloy in sand mold casting
title The role of acoustic pressure during solidification of AlSi7Mg alloy in sand mold casting
spellingShingle The role of acoustic pressure during solidification of AlSi7Mg alloy in sand mold casting
Puga, Hélder
Aluminum alloy
Sand casting: Acoustic radiator
Ultrasonic melt refinement
α-Al grain size
title_short The role of acoustic pressure during solidification of AlSi7Mg alloy in sand mold casting
title_full The role of acoustic pressure during solidification of AlSi7Mg alloy in sand mold casting
title_fullStr The role of acoustic pressure during solidification of AlSi7Mg alloy in sand mold casting
title_full_unstemmed The role of acoustic pressure during solidification of AlSi7Mg alloy in sand mold casting
title_sort The role of acoustic pressure during solidification of AlSi7Mg alloy in sand mold casting
author Puga, Hélder
author_facet Puga, Hélder
Barbosa, J.
Carneiro, Vítor Hugo Pimenta
author_role author
author2 Barbosa, J.
Carneiro, Vítor Hugo Pimenta
author2_role author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Puga, Hélder
Barbosa, J.
Carneiro, Vítor Hugo Pimenta
dc.subject.por.fl_str_mv Aluminum alloy
Sand casting: Acoustic radiator
Ultrasonic melt refinement
α-Al grain size
topic Aluminum alloy
Sand casting: Acoustic radiator
Ultrasonic melt refinement
α-Al grain size
description New alloy processes have been developed and casting techniques are continuously evolving. Such constant development implies a consequent development and optimization of melt processing and treatment. The present work proposes a method for studying the influence of acoustic pressure in the overall refinement of sand cast aluminum alloys, using and correlating experimental and numerical approaches. It is shown that the refinement/modification of the α-Al matrix is a consequence of the acoustic activation caused in the liquid metal directly below the face of the acoustic radiator. Near the feeder, there is a clear homogeneity in the morphology of the α-Al with respect to grain size and grain circularity. However, the damping of acoustic pressure as the melt is moved away from the feeder increases and the influence of ultrasound is reduced, even though the higher cooling rate seems to compensate for this effect.
publishDate 2019
dc.date.none.fl_str_mv 2019-04-27
2019-04-27T00:00:00Z
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/1822/60294
url http://hdl.handle.net/1822/60294
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 2075-4701
10.3390/met9050490
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 Multidisciplinary Digital Publishing Institute
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute
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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