Microstructural Characterization of Dissimilar Titanium Alloys Joints Using Ni/Al Nanolayers
Autor(a) principal: | |
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Data de Publicação: | 2018 |
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/10316/107775 https://doi.org/10.3390/met8090715 |
Resumo: | This study demonstrates the potential of the use of Ni/Al nanolayers for joining dissimilar titanium alloys. For this purpose, a detailed microstructural characterization of the diffusion bonding interfaces of TiAl to Ti6Al4V, TiAl to TiNi and TiNi to Ti6Al4V was carried out. The nanolayers (alternated aluminum and nickel (Ni-7V wt.%) layers) were deposited onto the base material surfaces. Diffusion bonding was performed at 700 and 800 C under pressures ranging from 5 to 40 MPa and at dwell times between 60 and 180 min. Microstructural characterization was performed using high resolution transmission and scanning electron microscopies. The results revealed that dissimilar titanium joints (TiAl to Ti6Al4V, TiAl to TiNi and TiNi to Ti6Al4V) assisted by Ni/Al nanolayers can be obtained successfully at 800 C for 60 min using a pressure of 20 MPa. The bond interfaces are thin (less than 10 m) and mainly composed of NiAl grains with a few nanometric grains of Al8V5. Thin layers of Al-Ni-Ti intermetallic compounds were formed adjacent to the base materials due to their reaction with the nanolayers. |
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Microstructural Characterization of Dissimilar Titanium Alloys Joints Using Ni/Al Nanolayersdiffusion bondingmultilayerstitanium alloysmicrostructureinterfacesputteringThis study demonstrates the potential of the use of Ni/Al nanolayers for joining dissimilar titanium alloys. For this purpose, a detailed microstructural characterization of the diffusion bonding interfaces of TiAl to Ti6Al4V, TiAl to TiNi and TiNi to Ti6Al4V was carried out. The nanolayers (alternated aluminum and nickel (Ni-7V wt.%) layers) were deposited onto the base material surfaces. Diffusion bonding was performed at 700 and 800 C under pressures ranging from 5 to 40 MPa and at dwell times between 60 and 180 min. Microstructural characterization was performed using high resolution transmission and scanning electron microscopies. The results revealed that dissimilar titanium joints (TiAl to Ti6Al4V, TiAl to TiNi and TiNi to Ti6Al4V) assisted by Ni/Al nanolayers can be obtained successfully at 800 C for 60 min using a pressure of 20 MPa. The bond interfaces are thin (less than 10 m) and mainly composed of NiAl grains with a few nanometric grains of Al8V5. Thin layers of Al-Ni-Ti intermetallic compounds were formed adjacent to the base materials due to their reaction with the nanolayers.MDPI2018info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/107775http://hdl.handle.net/10316/107775https://doi.org/10.3390/met8090715eng2075-4701Simões, SóniaViana, FilomenaRamos, Ana S.Vieira, M. TeresaVieira, Manuelinfo: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:RCAAP2023-08-01T10:15:58Zoai:estudogeral.uc.pt:10316/107775Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:24:05.036347Repositório 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 |
Microstructural Characterization of Dissimilar Titanium Alloys Joints Using Ni/Al Nanolayers |
title |
Microstructural Characterization of Dissimilar Titanium Alloys Joints Using Ni/Al Nanolayers |
spellingShingle |
Microstructural Characterization of Dissimilar Titanium Alloys Joints Using Ni/Al Nanolayers Simões, Sónia diffusion bonding multilayers titanium alloys microstructure interface sputtering |
title_short |
Microstructural Characterization of Dissimilar Titanium Alloys Joints Using Ni/Al Nanolayers |
title_full |
Microstructural Characterization of Dissimilar Titanium Alloys Joints Using Ni/Al Nanolayers |
title_fullStr |
Microstructural Characterization of Dissimilar Titanium Alloys Joints Using Ni/Al Nanolayers |
title_full_unstemmed |
Microstructural Characterization of Dissimilar Titanium Alloys Joints Using Ni/Al Nanolayers |
title_sort |
Microstructural Characterization of Dissimilar Titanium Alloys Joints Using Ni/Al Nanolayers |
author |
Simões, Sónia |
author_facet |
Simões, Sónia Viana, Filomena Ramos, Ana S. Vieira, M. Teresa Vieira, Manuel |
author_role |
author |
author2 |
Viana, Filomena Ramos, Ana S. Vieira, M. Teresa Vieira, Manuel |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Simões, Sónia Viana, Filomena Ramos, Ana S. Vieira, M. Teresa Vieira, Manuel |
dc.subject.por.fl_str_mv |
diffusion bonding multilayers titanium alloys microstructure interface sputtering |
topic |
diffusion bonding multilayers titanium alloys microstructure interface sputtering |
description |
This study demonstrates the potential of the use of Ni/Al nanolayers for joining dissimilar titanium alloys. For this purpose, a detailed microstructural characterization of the diffusion bonding interfaces of TiAl to Ti6Al4V, TiAl to TiNi and TiNi to Ti6Al4V was carried out. The nanolayers (alternated aluminum and nickel (Ni-7V wt.%) layers) were deposited onto the base material surfaces. Diffusion bonding was performed at 700 and 800 C under pressures ranging from 5 to 40 MPa and at dwell times between 60 and 180 min. Microstructural characterization was performed using high resolution transmission and scanning electron microscopies. The results revealed that dissimilar titanium joints (TiAl to Ti6Al4V, TiAl to TiNi and TiNi to Ti6Al4V) assisted by Ni/Al nanolayers can be obtained successfully at 800 C for 60 min using a pressure of 20 MPa. The bond interfaces are thin (less than 10 m) and mainly composed of NiAl grains with a few nanometric grains of Al8V5. Thin layers of Al-Ni-Ti intermetallic compounds were formed adjacent to the base materials due to their reaction with the nanolayers. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018 |
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/10316/107775 http://hdl.handle.net/10316/107775 https://doi.org/10.3390/met8090715 |
url |
http://hdl.handle.net/10316/107775 https://doi.org/10.3390/met8090715 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
2075-4701 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
MDPI |
publisher.none.fl_str_mv |
MDPI |
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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1799134126473740289 |