Microstructural characterization and mechanical behavior of NiTi shape memory alloys ultrasonic joints using Cu interlayer

Bibliographic Details
Main Author: Zhang, Wei
Publication Date: 2018
Other Authors: Ao, Sansan, Oliveira, Joao Pedro, Zeng, Zhi, Huang, Yifei, Luo, Zhen
Format: Article
Language: eng
Source: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Download full: https://doi.org/10.3390/ma11101830
Summary: This research was funded by National Key R&D Program of China under Grant 2018YFB1107900, the National Natural Science Foundation of China under Grant 51775091 and 51575383; Natural Science Foundation of Tianjin City under Grant 18JCQNJC04100; Science and Technology Project of Sichuan Province under Grant 2018GZ0284; Fundacao para a Ciencia e a Tecnologia (FCT-MCTES) under Grant PEst-OE/EME/UI0667/2014.
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spelling Microstructural characterization and mechanical behavior of NiTi shape memory alloys ultrasonic joints using Cu interlayerFailure behaviorFracture morphologyMicrostructural characterizationNiTi shape memory alloysUltrasonic spot weldingMaterials Science(all)This research was funded by National Key R&D Program of China under Grant 2018YFB1107900, the National Natural Science Foundation of China under Grant 51775091 and 51575383; Natural Science Foundation of Tianjin City under Grant 18JCQNJC04100; Science and Technology Project of Sichuan Province under Grant 2018GZ0284; Fundacao para a Ciencia e a Tecnologia (FCT-MCTES) under Grant PEst-OE/EME/UI0667/2014.NiTi shape memory alloys (SMAs) are a class of functional materials which can be significantly deformed and recover their original shape via a reversible martensitic phase transformation. Developing effective joining techniques can expand the application of SMAs in the medical and engineering fields. In this study, ultrasonic spot welding (USW), a solid-state joining technique, was used to join NiTi sheets using a Cu interlayer in between the two joining sheets. The influence of USW process on the microstructural characteristics and mechanical behavior of the NiTi joints was investigated. Compared with conventional fusion welding techniques, no intermetallic compounds formed in the joints, which is extreme importance for this particular class of alloys. The joining mechanisms involve a combination of shear plastic deformation, mechanical interlocking and formation of micro-welds. A better bonding interface was obtained with higher welding energy levels, which contributed to a higher tensile load. An interfacial fracture mode occurred and the fracture surfaces exhibited both brittle and ductile-like characteristics with the existence of tear ridges and dimples. The fracture initiated at the weak region of the joint border and then propagated through it, leading to tearing of Cu foil at the fracture interface.DEMI - Departamento de Engenharia Mecânica e IndustrialUNIDEMI - Unidade de Investigação e Desenvolvimento em Engenharia Mecânica e IndustrialRUNZhang, WeiAo, SansanOliveira, Joao PedroZeng, ZhiHuang, YifeiLuo, Zhen2019-04-02T22:16:41Z2018-09-262018-09-26T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://doi.org/10.3390/ma11101830eng1996-1944PURE: 12142532http://www.scopus.com/inward/record.url?scp=85053903218&partnerID=8YFLogxKhttps://doi.org/10.3390/ma11101830info: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:RCAAP2024-03-11T04:31:07Zoai:run.unl.pt:10362/65383Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:34:20.008091Repositório 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 and mechanical behavior of NiTi shape memory alloys ultrasonic joints using Cu interlayer
title Microstructural characterization and mechanical behavior of NiTi shape memory alloys ultrasonic joints using Cu interlayer
spellingShingle Microstructural characterization and mechanical behavior of NiTi shape memory alloys ultrasonic joints using Cu interlayer
Zhang, Wei
Failure behavior
Fracture morphology
Microstructural characterization
NiTi shape memory alloys
Ultrasonic spot welding
Materials Science(all)
title_short Microstructural characterization and mechanical behavior of NiTi shape memory alloys ultrasonic joints using Cu interlayer
title_full Microstructural characterization and mechanical behavior of NiTi shape memory alloys ultrasonic joints using Cu interlayer
title_fullStr Microstructural characterization and mechanical behavior of NiTi shape memory alloys ultrasonic joints using Cu interlayer
title_full_unstemmed Microstructural characterization and mechanical behavior of NiTi shape memory alloys ultrasonic joints using Cu interlayer
title_sort Microstructural characterization and mechanical behavior of NiTi shape memory alloys ultrasonic joints using Cu interlayer
author Zhang, Wei
author_facet Zhang, Wei
Ao, Sansan
Oliveira, Joao Pedro
Zeng, Zhi
Huang, Yifei
Luo, Zhen
author_role author
author2 Ao, Sansan
Oliveira, Joao Pedro
Zeng, Zhi
Huang, Yifei
Luo, Zhen
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv DEMI - Departamento de Engenharia Mecânica e Industrial
UNIDEMI - Unidade de Investigação e Desenvolvimento em Engenharia Mecânica e Industrial
RUN
dc.contributor.author.fl_str_mv Zhang, Wei
Ao, Sansan
Oliveira, Joao Pedro
Zeng, Zhi
Huang, Yifei
Luo, Zhen
dc.subject.por.fl_str_mv Failure behavior
Fracture morphology
Microstructural characterization
NiTi shape memory alloys
Ultrasonic spot welding
Materials Science(all)
topic Failure behavior
Fracture morphology
Microstructural characterization
NiTi shape memory alloys
Ultrasonic spot welding
Materials Science(all)
description This research was funded by National Key R&D Program of China under Grant 2018YFB1107900, the National Natural Science Foundation of China under Grant 51775091 and 51575383; Natural Science Foundation of Tianjin City under Grant 18JCQNJC04100; Science and Technology Project of Sichuan Province under Grant 2018GZ0284; Fundacao para a Ciencia e a Tecnologia (FCT-MCTES) under Grant PEst-OE/EME/UI0667/2014.
publishDate 2018
dc.date.none.fl_str_mv 2018-09-26
2018-09-26T00:00:00Z
2019-04-02T22:16:41Z
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/ma11101830
url https://doi.org/10.3390/ma11101830
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 1996-1944
PURE: 12142532
http://www.scopus.com/inward/record.url?scp=85053903218&partnerID=8YFLogxK
https://doi.org/10.3390/ma11101830
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
_version_ 1799137964456935424

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