Ultrasonic-assisted brazing of titanium joints using modified Al-Si-Cu based fillers: brazing at liquid-semisolid states under load
Autor(a) principal: | |
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Data de Publicação: | 2021 |
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/1822/77700 |
Resumo: | Brazing joints of Ti/Ti under ultrasonic vibration (USV) and compression load were investigated using optimized and modified filler alloys of Al-Si-Cu-(Ni)-(Sr) group prepared in the lab. Preliminary trails at semisolid to liquid states were conducted using the ready Al-Si-Cu-(Mg) alloy as a filler, then the brazing cycle was redesigned and enhanced according to the microstructural observations of the produced joints. USV assisted brazing at the semisolid state of low solid fraction was able to produce joints with round silicon morphology and granular <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>α</mi><mo>−</mo><mi>A</mi><mi>l</mi></mrow></semantics></math></inline-formula>, while at a high solid fraction, USV was only able to affect the silicon and intermetallic particles. Applying a compression load after ultrasonic vibration, at a designed solid fraction, was proved to be a successful technique for improving the quality of the joints by reducing the porosity, enhancing the soundness of the joint, and the diffusion at the interface. Based on alloy composition and the improved brazing cycle, joints of thin intermetallic layer and high shear strength (of 93 MPa average value) were achieved. The microstructures and the mechanical behavior were discussed based on the filler compositions and brazing parameters. |
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Ultrasonic-assisted brazing of titanium joints using modified Al-Si-Cu based fillers: brazing at liquid-semisolid states under loadBrazingTitaniumAluminum alloysUltrasonic vibrationSemisolidCompression loadScience & TechnologyBrazing joints of Ti/Ti under ultrasonic vibration (USV) and compression load were investigated using optimized and modified filler alloys of Al-Si-Cu-(Ni)-(Sr) group prepared in the lab. Preliminary trails at semisolid to liquid states were conducted using the ready Al-Si-Cu-(Mg) alloy as a filler, then the brazing cycle was redesigned and enhanced according to the microstructural observations of the produced joints. USV assisted brazing at the semisolid state of low solid fraction was able to produce joints with round silicon morphology and granular <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>α</mi><mo>−</mo><mi>A</mi><mi>l</mi></mrow></semantics></math></inline-formula>, while at a high solid fraction, USV was only able to affect the silicon and intermetallic particles. Applying a compression load after ultrasonic vibration, at a designed solid fraction, was proved to be a successful technique for improving the quality of the joints by reducing the porosity, enhancing the soundness of the joint, and the diffusion at the interface. Based on alloy composition and the improved brazing cycle, joints of thin intermetallic layer and high shear strength (of 93 MPa average value) were achieved. The microstructures and the mechanical behavior were discussed based on the filler compositions and brazing parameters.This work was done with the support of the PEACE II, Erasmus Mundus Lot 2 Project (2013-2443/001-001-EMA2), and the Global Platform for Syrian Students in Portugal.Multidisciplinary Digital Publishing Institute (MDPI)Universidade do MinhoMuhrat, AbdulsalamBarbosa, J.2021-12-072021-12-07T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/77700engMuhrat, A.; Barbosa, J. Ultrasonic-Assisted Brazing of Titanium Joints Using Modified Al-Si-Cu Based Fillers: Brazing at Liquid—Semisolid States under Load. Metals 2021, 11, 1968. https://doi.org/10.3390/met111219682075-470110.3390/met111219681968https://www.mdpi.com/2075-4701/11/12/1968info: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:RCAAP2023-07-21T12:44:01Zoai:repositorium.sdum.uminho.pt:1822/77700Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:41:37.760215Repositório 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 |
Ultrasonic-assisted brazing of titanium joints using modified Al-Si-Cu based fillers: brazing at liquid-semisolid states under load |
title |
Ultrasonic-assisted brazing of titanium joints using modified Al-Si-Cu based fillers: brazing at liquid-semisolid states under load |
spellingShingle |
Ultrasonic-assisted brazing of titanium joints using modified Al-Si-Cu based fillers: brazing at liquid-semisolid states under load Muhrat, Abdulsalam Brazing Titanium Aluminum alloys Ultrasonic vibration Semisolid Compression load Science & Technology |
title_short |
Ultrasonic-assisted brazing of titanium joints using modified Al-Si-Cu based fillers: brazing at liquid-semisolid states under load |
title_full |
Ultrasonic-assisted brazing of titanium joints using modified Al-Si-Cu based fillers: brazing at liquid-semisolid states under load |
title_fullStr |
Ultrasonic-assisted brazing of titanium joints using modified Al-Si-Cu based fillers: brazing at liquid-semisolid states under load |
title_full_unstemmed |
Ultrasonic-assisted brazing of titanium joints using modified Al-Si-Cu based fillers: brazing at liquid-semisolid states under load |
title_sort |
Ultrasonic-assisted brazing of titanium joints using modified Al-Si-Cu based fillers: brazing at liquid-semisolid states under load |
author |
Muhrat, Abdulsalam |
author_facet |
Muhrat, Abdulsalam Barbosa, J. |
author_role |
author |
author2 |
Barbosa, J. |
author2_role |
author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Muhrat, Abdulsalam Barbosa, J. |
dc.subject.por.fl_str_mv |
Brazing Titanium Aluminum alloys Ultrasonic vibration Semisolid Compression load Science & Technology |
topic |
Brazing Titanium Aluminum alloys Ultrasonic vibration Semisolid Compression load Science & Technology |
description |
Brazing joints of Ti/Ti under ultrasonic vibration (USV) and compression load were investigated using optimized and modified filler alloys of Al-Si-Cu-(Ni)-(Sr) group prepared in the lab. Preliminary trails at semisolid to liquid states were conducted using the ready Al-Si-Cu-(Mg) alloy as a filler, then the brazing cycle was redesigned and enhanced according to the microstructural observations of the produced joints. USV assisted brazing at the semisolid state of low solid fraction was able to produce joints with round silicon morphology and granular <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mi>α</mi><mo>−</mo><mi>A</mi><mi>l</mi></mrow></semantics></math></inline-formula>, while at a high solid fraction, USV was only able to affect the silicon and intermetallic particles. Applying a compression load after ultrasonic vibration, at a designed solid fraction, was proved to be a successful technique for improving the quality of the joints by reducing the porosity, enhancing the soundness of the joint, and the diffusion at the interface. Based on alloy composition and the improved brazing cycle, joints of thin intermetallic layer and high shear strength (of 93 MPa average value) were achieved. The microstructures and the mechanical behavior were discussed based on the filler compositions and brazing parameters. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-12-07 2021-12-07T00:00:00Z |
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/1822/77700 |
url |
https://hdl.handle.net/1822/77700 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Muhrat, A.; Barbosa, J. Ultrasonic-Assisted Brazing of Titanium Joints Using Modified Al-Si-Cu Based Fillers: Brazing at Liquid—Semisolid States under Load. Metals 2021, 11, 1968. https://doi.org/10.3390/met11121968 2075-4701 10.3390/met11121968 1968 https://www.mdpi.com/2075-4701/11/12/1968 |
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 |
Multidisciplinary Digital Publishing Institute (MDPI) |
publisher.none.fl_str_mv |
Multidisciplinary Digital Publishing Institute (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 |
repository.mail.fl_str_mv |
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1799132965700108288 |