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Effect of artificial saliva on the fatigue and wear response of TiAl6V4 specimens produced by SLM

2020Conference paper Open access
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datacite.subject.fosEngenharia e Tecnologia::Engenharia Mecânica
datacite.subject.fosEngenharia e Tecnologia::Engenharia Civil
datacite.subject.fosEngenharia e Tecnologia::Engenharia dos Materiais
datacite.subject.fosCiências Naturais::Outras Ciências Naturais
dc.contributor.authorJesus, J. de
dc.contributor.authorBorrego, L. P.
dc.contributor.authorVilhena, L.
dc.contributor.authorFerreira, J. A. M.
dc.contributor.authorRamalho, A.
dc.contributor.authorCapela, C.
dc.date.accessioned2025-10-20T16:40:58Z
dc.date.available2025-10-20T16:40:58Z
dc.date.issued2020
dc.descriptionConference name - 1st Virtual European Conference on Fracture, VECF 2020; Conference date - 29 June 2020 - 1 July 2020; Conference code - 166554
dc.description.abstractAdditive manufactured (AM) parts made in TiAl6V4 alloy are increasingly used in medical prostheses and dental implants, because of its high strength, low weight and excellent biocompatibility. These components work under environmentally assisted cyclic loading, i.e. under corrosion-fatigue, and/or subject to wear conditions. Fatigue performance of additive manufactured alloys is significantly influenced by the porosities, residual stresses, which can reduce its strength when compared with traditional materials. This paper presents the results of a fatigue crack propagation study in titanium TiAl6V4 specimens produced by selective laser melting (SLM) under artificial saliva ambient. Tests were performed using standard 6 mm thick compact specimens (CT) tested at R=0.05 and with frequencies of 1 and 10 Hz. The main objective of the current research work was studying the corrosion effect on the fatigue crack propagation of Selective Laser Melting (SLM) specimens, and to compare the tribocorrosion behaviour of two different specimens: one produced by SLM and the other by the conventional/traditional method. The study concluded that: AM Titanium Ti6Al4V alloy exhibits a moderate effect of saliva ambient on fatigue crack nucleation and on fatigue crack propagation, the wear rate coefficients for SLM and conventional manufactured specimens is of the same order, and the mechanism of abrasive wear is mainly with grooves aligned with the direction of sliding.eng
dc.description.sponsorshipThe authors would like to acknowledge the sponsoring under the project no. 028789, financed by the European Regional Development Fund (FEDER), through the Portugal-2020 program (PT2020), under the Regional Operational Program of the Center (CENTRO-01-0145-FEDER-028789), and the project POCI-01-0247-FEDER-042536, financed by European Funds, through program COMPETE2020, under the Eureka smart label S0129-AddDies. Finally, this research is also sponsored by FEDER funds through the program COMPETE – Programa Operacional Factores de Competitividade – and by national funds through FCT – Fundação para a Ciência e a Tecnologia –, under the project UIDB/00285/2020.
dc.identifier.citationJ. de Jesus, L.P. Borrego, L. Vilhena, J.A.M. Ferreira, A. Ramalho, C. Capela, Effect of artificial saliva on the fatigue and wear response of TiAl6V4 specimens produced by SLM, Procedia Structural Integrity, Volume 28, 2020, Pages 790-795, ISSN 2452-3216, https://doi.org/10.1016/j.prostr.2020.10.092.
dc.identifier.doi10.1016/j.prostr.2020.10.092
dc.identifier.eissn2452-3216
dc.identifier.urihttp://hdl.handle.net/10400.8/14329
dc.language.isoeng
dc.peerreviewedyes
dc.publisherElsevier
dc.relationCentre for Mechanical Enginnering, Materials and Processes
dc.relation.hasversionhttps://www.sciencedirect.com/science/article/pii/S2452321620305941
dc.relation.ispartofProcedia Structural Integrity
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectAdditive manufacturing
dc.subjectCorrosion-fatigue
dc.subjectAbrasive wear
dc.subjectTitanium TiAl6V4 alloy
dc.titleEffect of artificial saliva on the fatigue and wear response of TiAl6V4 specimens produced by SLMeng
dc.typeconference paper
dspace.entity.typePublication
oaire.awardTitleCentre for Mechanical Enginnering, Materials and Processes
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00285%2F2020/PT
oaire.citation.conferenceDate2020-07
oaire.citation.conferencePlaceVirtual, Online
oaire.citation.endPage795
oaire.citation.startPage790
oaire.citation.titleProcedia Structural Integrity
oaire.citation.volume28
oaire.fundingStream6817 - DCRRNI ID
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameCapela
person.givenNameCarlos
person.identifier.ciencia-id9B1E-6857-3D6B
person.identifier.orcid0000-0003-3334-4945
person.identifier.ridG-6395-2016
person.identifier.scopus-author-id7801358401
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
relation.isAuthorOfPublication9b079aa3-b79b-4395-b081-1f23d6a17514
relation.isAuthorOfPublication.latestForDiscovery9b079aa3-b79b-4395-b081-1f23d6a17514
relation.isProjectOfPublication0a3418ca-35b9-4670-a826-154cceca5a89
relation.isProjectOfPublication.latestForDiscovery0a3418ca-35b9-4670-a826-154cceca5a89

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Additive manufactured (AM) parts made in TiAl6V4 alloy are increasingly used in medical prostheses and dental implants, because of its high strength, low weight and excellent biocompatibility. These components work under environmentally assisted cyclic loading, i.e. under corrosion-fatigue, and/or subject to wear conditions. Fatigue performance of additive manufactured alloys is significantly influenced by the porosities, residual stresses, which can reduce its strength when compared with traditional materials. This paper presents the results of a fatigue crack propagation study in titanium TiAl6V4 specimens produced by selective laser melting (SLM) under artificial saliva ambient. Tests were performed using standard 6 mm thick compact specimens (CT) tested at R=0.05 and with frequencies of 1 and 10 Hz. The main objective of the current research work was studying the corrosion effect on the fatigue crack propagation of Selective Laser Melting (SLM) specimens, and to compare the tribocorrosion behaviour of two different specimens: one produced by SLM and the other by the conventional/traditional method. The study concluded that: AM Titanium Ti6Al4V alloy exhibits a moderate effect of saliva ambient on fatigue crack nucleation and on fatigue crack propagation, the wear rate coefficients for SLM and conventional manufactured specimens is of the same order, and the mechanism of abrasive wear is mainly with grooves aligned with the direction of sliding.
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