Induction melting of gamma-TiAl in CaO crucibles
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , |
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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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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1817545382028115968 |