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Effect of Scan Strategies and Use of Support Structures on Surface Quality and Hardness of L-PBF AlSi10Mg Parts

2020Artigo científico Acesso aberto
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dc.contributor.authorGouveia, Ronny M.
dc.contributor.authorSilva, Francisco
dc.contributor.authorAtzeni, Eleonora
dc.contributor.authorSormaz, Dušan
dc.contributor.authorAlves, Jorge Lino
dc.contributor.authorPereira, António Bastos
dc.date.accessioned2022-01-13T10:42:56Z
dc.date.available2022-01-13T10:42:56Z
dc.date.issued2020
dc.description.abstractAdditive manufacturing allows for a great degree of design freedom and is rapidly becoming a mainstream manufacturing process. However, as in all manufacturing processes, it has its limitations and specificities. Equipping engineers with this knowledge allows for a higher degree of optimization, extracting the most out of this technology. Therefore, a specific part design was devised and created via L-PBF (Laser Powder Bed Fusion) using AlSi10Mg powder. Certain parameters were varied to identify the influence on material density, hardness, roughness, residual stress and microstructures. It was found that on heat treated parts laser pattern strategy is one of the most influential aspects, showing that chessboard and stripes 67° improved outcome; average Ra roughness varied between 8–12 µm, residual stress was higher on vertical surfaces than horizontal surfaces, with the combination of support structures and stripes 67° strategies generating the lowest residual stress (205 MPa on a lateral/vertical face), hardness was non-orientation dependent and larger on samples with chessboard fabrication strategies, while microstructures were composed of α–Al dendrites surrounded by Si particles. The distribution and grain size of the microstructure is dependent on location regarding melt pool and HAZ area. Furthermore, Al–Mg oxides were encountered on the surface, along with pores generating from lack of fusion.pt_PT
dc.description.sponsorshipThe authors would like to acknowledge the Hypermetal Additive Manufacturing for their contribution with some additive manufactured samples and materials, as well as ONA Electro-Erosión Lda. for the use of their electro erosion cutting equipment, used for the separation of certain samples from the build plate. The Authors also would like to thanks to Rui Rocha from CEMUP, due to his sharp critical analysis of SEM results and his help in achieving the best SEM pictures. A.B.P would like to acknowledge the projects UIDB/00481/2020 and UIDP/00481/2020—FCT—Fundação para a Ciencia e a Tecnologia; and CENTRO-01-0145-FEDER-022083—Centro Portugal Regional Operational Programme (Centro2020), under the PORTUGAL 2020 Partnership Agreement, through the European Regional Development Fund.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3390/ma13102248pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.22/19442
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationCENTRO-01-0145-FEDER-022083pt_PT
dc.relationCentre for Mechanical Technology and Automation
dc.relationCentre for Mechanical Technology and Automation
dc.relation.publisherversionhttps://www.mdpi.com/1996-1944/13/10/2248/htmpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectAdditive manufacturing (AM)pt_PT
dc.subjectAdditive manufacturing materialspt_PT
dc.subjectAlSi10Mgpt_PT
dc.subjectMicrostructurept_PT
dc.subjectRoughnesspt_PT
dc.subjectResidual stresspt_PT
dc.subjectProcess parameterspt_PT
dc.subjectPattern strategiespt_PT
dc.subjectLaser powder bed fusionpt_PT
dc.subjectL–PBFpt_PT
dc.subjectAl–Mg oxidespt_PT
dc.subjectHardnesspt_PT
dc.subjectSelective laser melting (SLM)pt_PT
dc.titleEffect of Scan Strategies and Use of Support Structures on Surface Quality and Hardness of L-PBF AlSi10Mg Partspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCentre for Mechanical Technology and Automation
oaire.awardTitleCentre for Mechanical Technology and Automation
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00481%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F00481%2F2020/PT
oaire.citation.issue10pt_PT
oaire.citation.startPage2248pt_PT
oaire.citation.titleMaterialspt_PT
oaire.citation.volume13pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameSilva
person.givenNameFrancisco
person.identifier1422904
person.identifier.ciencia-idB81C-4758-2D59
person.identifier.orcid0000-0001-8570-4362
person.identifier.ridI-5708-2015
person.identifier.scopus-author-id56870827300
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationd050c135-4d9d-4fb2-97d1-cac97be3f6b9
relation.isAuthorOfPublication.latestForDiscoveryd050c135-4d9d-4fb2-97d1-cac97be3f6b9
relation.isProjectOfPublication76f6387f-3e83-49f3-aa76-3cec89fc8ffb
relation.isProjectOfPublication4d0373b5-085c-4a79-911f-4642e51fb32a
relation.isProjectOfPublication.latestForDiscovery76f6387f-3e83-49f3-aa76-3cec89fc8ffb

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