Induction melting of gamma-TiAl in CaO crucibles

Detalhes bibliográficos
Autor(a) principal: Gomes, Fernando
Data de Publicação: 2008
Outros Autores: Barbosa, J., Ribeiro, Carlos Silva
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: https://hdl.handle.net/1822/12413
Resumo: In this work a Ti–48Al alloy was induction melted in a CaO crucible using different superheating temperatures. In the first stage, samples were allowed to cool to room temperature inside the crucibles, in order to simulate a low cooling rate, and in the second stage samples were centrifugally poured into a steel mould, in order to study the effect of the melting operation on the alloy contamination with oxygen. The effect of superheating temperature on the metal-crucible interaction, alloy chemical composition, microstructure and microhardness is evaluated. The CaO crucible was found to be slightly dissolved by the molten alloy and the extent of that dissolution depends on the superheating temperature. A relationship was found between oxygen concentration and microhardness profiles of the a2 þ g microconstituent, from the surface to the inside of samples, which depends on the superheating temperature and cooling rate
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spelling Induction melting of gamma-TiAl in CaO cruciblesTitanium aluminidesMeltingCrucibleCaOContaminationMicrostructureTitanium aluminides, based on TiAlCastingA. Titanium aluminides, based on TiAlC. CastingC. MeltingD. MicrostructureScience & TechnologyIn this work a Ti–48Al alloy was induction melted in a CaO crucible using different superheating temperatures. In the first stage, samples were allowed to cool to room temperature inside the crucibles, in order to simulate a low cooling rate, and in the second stage samples were centrifugally poured into a steel mould, in order to study the effect of the melting operation on the alloy contamination with oxygen. The effect of superheating temperature on the metal-crucible interaction, alloy chemical composition, microstructure and microhardness is evaluated. The CaO crucible was found to be slightly dissolved by the molten alloy and the extent of that dissolution depends on the superheating temperature. A relationship was found between oxygen concentration and microhardness profiles of the a2 þ g microconstituent, from the surface to the inside of samples, which depends on the superheating temperature and cooling rateFCT - Fundaçºão para a Ciência e TecnologiaElsevier ScienceUniversidade do MinhoGomes, FernandoBarbosa, J.Ribeiro, Carlos Silva20082008-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/12413engF. Gomes, J. Barbosa, S. Ribeiro - Induction Melting of gamma-TiAl in CaO crucibles. Intermetallics. Vol.16, nº11-12 (2008), p.1292-12970966-979510.1016/j.intermet.2008.08.008info: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:RCAAP2024-05-25T02:13:26Zoai:repositorium.sdum.uminho.pt:1822/12413Portal AgregadorONGhttps://www.rcaap.pt/oai/openairemluisa.alvim@gmail.comopendoar:71602024-05-25T02:13:26Repositório 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 Induction melting of gamma-TiAl in CaO crucibles
title Induction melting of gamma-TiAl in CaO crucibles
spellingShingle Induction melting of gamma-TiAl in CaO crucibles
Gomes, Fernando
Titanium aluminides
Melting
Crucible
CaO
Contamination
Microstructure
Titanium aluminides, based on TiAl
Casting
A. Titanium aluminides, based on TiAl
C. Casting
C. Melting
D. Microstructure
Science & Technology
title_short Induction melting of gamma-TiAl in CaO crucibles
title_full Induction melting of gamma-TiAl in CaO crucibles
title_fullStr Induction melting of gamma-TiAl in CaO crucibles
title_full_unstemmed Induction melting of gamma-TiAl in CaO crucibles
title_sort Induction melting of gamma-TiAl in CaO crucibles
author Gomes, Fernando
author_facet Gomes, Fernando
Barbosa, J.
Ribeiro, Carlos Silva
author_role author
author2 Barbosa, J.
Ribeiro, Carlos Silva
author2_role author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Gomes, Fernando
Barbosa, J.
Ribeiro, Carlos Silva
dc.subject.por.fl_str_mv Titanium aluminides
Melting
Crucible
CaO
Contamination
Microstructure
Titanium aluminides, based on TiAl
Casting
A. Titanium aluminides, based on TiAl
C. Casting
C. Melting
D. Microstructure
Science & Technology
topic Titanium aluminides
Melting
Crucible
CaO
Contamination
Microstructure
Titanium aluminides, based on TiAl
Casting
A. Titanium aluminides, based on TiAl
C. Casting
C. Melting
D. Microstructure
Science & Technology
description In this work a Ti–48Al alloy was induction melted in a CaO crucible using different superheating temperatures. In the first stage, samples were allowed to cool to room temperature inside the crucibles, in order to simulate a low cooling rate, and in the second stage samples were centrifugally poured into a steel mould, in order to study the effect of the melting operation on the alloy contamination with oxygen. The effect of superheating temperature on the metal-crucible interaction, alloy chemical composition, microstructure and microhardness is evaluated. The CaO crucible was found to be slightly dissolved by the molten alloy and the extent of that dissolution depends on the superheating temperature. A relationship was found between oxygen concentration and microhardness profiles of the a2 þ g microconstituent, from the surface to the inside of samples, which depends on the superheating temperature and cooling rate
publishDate 2008
dc.date.none.fl_str_mv 2008
2008-01-01T00:00:00Z
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 https://hdl.handle.net/1822/12413
url https://hdl.handle.net/1822/12413
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv F. Gomes, J. Barbosa, S. Ribeiro - Induction Melting of gamma-TiAl in CaO crucibles. Intermetallics. Vol.16, nº11-12 (2008), p.1292-1297
0966-9795
10.1016/j.intermet.2008.08.008
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
repository.mail.fl_str_mv mluisa.alvim@gmail.com
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