Interaction between Ni/Ti nanomultilayers and bulk Ti-6Al-4V during heat treatment
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: | https://doi.org/10.3390/met8110878 |
Resumo: | The diffusion bonding of Ti-6Al-4V to NiTi alloys assisted by Ni/Ti reactive multilayer thin films indicates the diffusion of Ni from the filler material towards bulk Ti-6Al-4V. As a consequence, the fragile NiTi2 intermetallic phase is formed at the joint interface. In this context, the aim of this work is to investigate the occurrence of Ni diffusion from Ni/Ti nanomultilayers towards Ti-6Al-4V substrates. For this purpose, multilayer coated Ti alloys were studied in situ at increasing temperatures using synchrotron radiation. After heat treatment, scanning electron microscopy (SEM) analyses were carried out and elemental map distributions were acquired by electron probe microanalysis (EPMA). The EPMA maps confirm the occurrence of Ni diffusion; the presence of Ni in the substrate regions immediately underneath the nanomultilayers is clearly indicated and becomes more pronounced as the temperature increases. The presence of Ni is observed in the same locations where V is found, thus in β-Ti grains of Ti-6Al-4V. At the same time, the synchrotron results together with SEM analyses allow the increase of the amount of β-Ti phase in Ti-6Al-4V to be identified, while the thin films are mainly constituted by NiTi2. Therefore, the presence of the brittle NiTi2 intermetallic phase can be avoided if Ni diffusion is prevented. |
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Interaction between Ni/Ti nanomultilayers and bulk Ti-6Al-4V during heat treatmentDiffusionMultilayersNiNi/TiTi-6Al-4VMaterials Science(all)The diffusion bonding of Ti-6Al-4V to NiTi alloys assisted by Ni/Ti reactive multilayer thin films indicates the diffusion of Ni from the filler material towards bulk Ti-6Al-4V. As a consequence, the fragile NiTi2 intermetallic phase is formed at the joint interface. In this context, the aim of this work is to investigate the occurrence of Ni diffusion from Ni/Ti nanomultilayers towards Ti-6Al-4V substrates. For this purpose, multilayer coated Ti alloys were studied in situ at increasing temperatures using synchrotron radiation. After heat treatment, scanning electron microscopy (SEM) analyses were carried out and elemental map distributions were acquired by electron probe microanalysis (EPMA). The EPMA maps confirm the occurrence of Ni diffusion; the presence of Ni in the substrate regions immediately underneath the nanomultilayers is clearly indicated and becomes more pronounced as the temperature increases. The presence of Ni is observed in the same locations where V is found, thus in β-Ti grains of Ti-6Al-4V. At the same time, the synchrotron results together with SEM analyses allow the increase of the amount of β-Ti phase in Ti-6Al-4V to be identified, while the thin films are mainly constituted by NiTi2. Therefore, the presence of the brittle NiTi2 intermetallic phase can be avoided if Ni diffusion is prevented.DCM - Departamento de Ciência dos MateriaisCENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N)RUNCavaleiro, André JoãoRamos, Ana SofiaFernandes, Francisco BrazBaehtz, CarstenVieira, Maria Teresa Freire2018-11-16T23:17:20Z2018-11-012018-11-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://doi.org/10.3390/met8110878eng0379-6779PURE: 6355468http://www.scopus.com/inward/record.url?scp=85056235067&partnerID=8YFLogxKhttps://doi.org/10.3390/met8110878info: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:RCAAP2024-03-11T04:25:56Zoai:run.unl.pt:10362/51978Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:32:30.215958Repositório 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 |
Interaction between Ni/Ti nanomultilayers and bulk Ti-6Al-4V during heat treatment |
title |
Interaction between Ni/Ti nanomultilayers and bulk Ti-6Al-4V during heat treatment |
spellingShingle |
Interaction between Ni/Ti nanomultilayers and bulk Ti-6Al-4V during heat treatment Cavaleiro, André João Diffusion Multilayers Ni Ni/Ti Ti-6Al-4V Materials Science(all) |
title_short |
Interaction between Ni/Ti nanomultilayers and bulk Ti-6Al-4V during heat treatment |
title_full |
Interaction between Ni/Ti nanomultilayers and bulk Ti-6Al-4V during heat treatment |
title_fullStr |
Interaction between Ni/Ti nanomultilayers and bulk Ti-6Al-4V during heat treatment |
title_full_unstemmed |
Interaction between Ni/Ti nanomultilayers and bulk Ti-6Al-4V during heat treatment |
title_sort |
Interaction between Ni/Ti nanomultilayers and bulk Ti-6Al-4V during heat treatment |
author |
Cavaleiro, André João |
author_facet |
Cavaleiro, André João Ramos, Ana Sofia Fernandes, Francisco Braz Baehtz, Carsten Vieira, Maria Teresa Freire |
author_role |
author |
author2 |
Ramos, Ana Sofia Fernandes, Francisco Braz Baehtz, Carsten Vieira, Maria Teresa Freire |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
DCM - Departamento de Ciência dos Materiais CENIMAT-i3N - Centro de Investigação de Materiais (Lab. Associado I3N) RUN |
dc.contributor.author.fl_str_mv |
Cavaleiro, André João Ramos, Ana Sofia Fernandes, Francisco Braz Baehtz, Carsten Vieira, Maria Teresa Freire |
dc.subject.por.fl_str_mv |
Diffusion Multilayers Ni Ni/Ti Ti-6Al-4V Materials Science(all) |
topic |
Diffusion Multilayers Ni Ni/Ti Ti-6Al-4V Materials Science(all) |
description |
The diffusion bonding of Ti-6Al-4V to NiTi alloys assisted by Ni/Ti reactive multilayer thin films indicates the diffusion of Ni from the filler material towards bulk Ti-6Al-4V. As a consequence, the fragile NiTi2 intermetallic phase is formed at the joint interface. In this context, the aim of this work is to investigate the occurrence of Ni diffusion from Ni/Ti nanomultilayers towards Ti-6Al-4V substrates. For this purpose, multilayer coated Ti alloys were studied in situ at increasing temperatures using synchrotron radiation. After heat treatment, scanning electron microscopy (SEM) analyses were carried out and elemental map distributions were acquired by electron probe microanalysis (EPMA). The EPMA maps confirm the occurrence of Ni diffusion; the presence of Ni in the substrate regions immediately underneath the nanomultilayers is clearly indicated and becomes more pronounced as the temperature increases. The presence of Ni is observed in the same locations where V is found, thus in β-Ti grains of Ti-6Al-4V. At the same time, the synchrotron results together with SEM analyses allow the increase of the amount of β-Ti phase in Ti-6Al-4V to be identified, while the thin films are mainly constituted by NiTi2. Therefore, the presence of the brittle NiTi2 intermetallic phase can be avoided if Ni diffusion is prevented. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-11-16T23:17:20Z 2018-11-01 2018-11-01T00:00:00Z |
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://doi.org/10.3390/met8110878 |
url |
https://doi.org/10.3390/met8110878 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0379-6779 PURE: 6355468 http://www.scopus.com/inward/record.url?scp=85056235067&partnerID=8YFLogxK https://doi.org/10.3390/met8110878 |
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.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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1799137946974027776 |