On the formation of intermetallic matrix composites produced by mechanical alloying and sputtering
Autor(a) principal: | |
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Data de Publicação: | 2007 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/4203 https://doi.org/10.1016/j.jallcom.2006.08.281 |
Resumo: | (Ti-48Al)-based intermetallics were synthesized by a combination of mechanical alloying, sputtering and hot isostatic pressure techniques. Blended elemental powders of TiH2 and Al with nominal composition TiH2-48Al were mechanically alloyed for different periods of time. The powders were then coated with Ti and Ag and subsequently hot isostatically pressed at 900 °C with a maximum pressure of 150 MPa for 2 h. Finally they were heat treated at 1200 °C for 4 h. After processing, the compacts obtained from the TiH2-48Al coated powders had a lower hardness but a higher Young's modulus and fracture-toughness than the uncoated compacts. Therefore, the combined used of mechanical alloying, sputtering and compaction techniques might be an alternative method for the synthesis of compacts with non-conventional microstructures, formed by surface modified intermetallic particles. |
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7160 |
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On the formation of intermetallic matrix composites produced by mechanical alloying and sputteringTi-Al intermetallicsMechanical alloyingVapor depositionPowder metallurgyMechanical properties(Ti-48Al)-based intermetallics were synthesized by a combination of mechanical alloying, sputtering and hot isostatic pressure techniques. Blended elemental powders of TiH2 and Al with nominal composition TiH2-48Al were mechanically alloyed for different periods of time. The powders were then coated with Ti and Ag and subsequently hot isostatically pressed at 900 °C with a maximum pressure of 150 MPa for 2 h. Finally they were heat treated at 1200 °C for 4 h. After processing, the compacts obtained from the TiH2-48Al coated powders had a lower hardness but a higher Young's modulus and fracture-toughness than the uncoated compacts. Therefore, the combined used of mechanical alloying, sputtering and compaction techniques might be an alternative method for the synthesis of compacts with non-conventional microstructures, formed by surface modified intermetallic particles.http://www.sciencedirect.com/science/article/B6TWY-4M0BHF5-2/1/a82fc0ddb5840ac8097061402f5374d02007info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/4203http://hdl.handle.net/10316/4203https://doi.org/10.1016/j.jallcom.2006.08.281engJournal of Alloys and Compounds. 434-435:(2007) 378-382Neves, F.Duarte, N.Trindade, B.info: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:RCAAP2020-11-06T16:49:09Zoai:estudogeral.uc.pt:10316/4203Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:58:27.455530Repositório 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 |
On the formation of intermetallic matrix composites produced by mechanical alloying and sputtering |
title |
On the formation of intermetallic matrix composites produced by mechanical alloying and sputtering |
spellingShingle |
On the formation of intermetallic matrix composites produced by mechanical alloying and sputtering Neves, F. Ti-Al intermetallics Mechanical alloying Vapor deposition Powder metallurgy Mechanical properties |
title_short |
On the formation of intermetallic matrix composites produced by mechanical alloying and sputtering |
title_full |
On the formation of intermetallic matrix composites produced by mechanical alloying and sputtering |
title_fullStr |
On the formation of intermetallic matrix composites produced by mechanical alloying and sputtering |
title_full_unstemmed |
On the formation of intermetallic matrix composites produced by mechanical alloying and sputtering |
title_sort |
On the formation of intermetallic matrix composites produced by mechanical alloying and sputtering |
author |
Neves, F. |
author_facet |
Neves, F. Duarte, N. Trindade, B. |
author_role |
author |
author2 |
Duarte, N. Trindade, B. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Neves, F. Duarte, N. Trindade, B. |
dc.subject.por.fl_str_mv |
Ti-Al intermetallics Mechanical alloying Vapor deposition Powder metallurgy Mechanical properties |
topic |
Ti-Al intermetallics Mechanical alloying Vapor deposition Powder metallurgy Mechanical properties |
description |
(Ti-48Al)-based intermetallics were synthesized by a combination of mechanical alloying, sputtering and hot isostatic pressure techniques. Blended elemental powders of TiH2 and Al with nominal composition TiH2-48Al were mechanically alloyed for different periods of time. The powders were then coated with Ti and Ag and subsequently hot isostatically pressed at 900 °C with a maximum pressure of 150 MPa for 2 h. Finally they were heat treated at 1200 °C for 4 h. After processing, the compacts obtained from the TiH2-48Al coated powders had a lower hardness but a higher Young's modulus and fracture-toughness than the uncoated compacts. Therefore, the combined used of mechanical alloying, sputtering and compaction techniques might be an alternative method for the synthesis of compacts with non-conventional microstructures, formed by surface modified intermetallic particles. |
publishDate |
2007 |
dc.date.none.fl_str_mv |
2007 |
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/10316/4203 http://hdl.handle.net/10316/4203 https://doi.org/10.1016/j.jallcom.2006.08.281 |
url |
http://hdl.handle.net/10316/4203 https://doi.org/10.1016/j.jallcom.2006.08.281 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of Alloys and Compounds. 434-435:(2007) 378-382 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
aplication/PDF |
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 |
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1799133875851493376 |