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dc.contributor.authorLu, Xufei
dc.contributor.authorCervera Ruiz, Miguel
dc.contributor.authorChiumenti, Michele
dc.contributor.authorLi, Junjie
dc.contributor.authorJi, Xianglin
dc.contributor.authorZhang, Guohao
dc.contributor.authorLin, Xin
dc.contributor.otherUniversitat Politècnica de Catalunya. Doctorat en Anàlisi Estructural
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.date.accessioned2021-03-24T15:35:05Z
dc.date.available2021-03-24T15:35:05Z
dc.date.issued2020-12
dc.identifier.citationLu, X. [et al.]. Modeling of the effect of the building strategy on the thermomechanical response of Ti-6Al-4V rectangular parts manufactured by laser directed energy deposition. "Metals", Desembre 2020, vol. 10, núm. 20, p. 1643:1-1643:18.
dc.identifier.issn2075-4701
dc.identifier.urihttp://hdl.handle.net/2117/342395
dc.description.abstractPart warpage and residual stress are two of the main challenges for metal additive manufacturing (AM) as they result in lower geometric precision and poor mechanical properties of the products. This work investigates the effect of the building strategy on the heat transfer process and the evolution of the thermally induced mechanical variables in laser directed energy deposition (L-DED) in order to minimize residual stresses and deformations. A 3D finite element (FE) thermo-mechanical model is firstly calibrated through in-situ experiments of rectangular workpieces fabricated by L-DED technology, and, secondly, the coupled thermo-mechanical responses for different process parameters and scanning patterns are discussed in detail. On the calibration stage, the remarkable agreement is achieved between predicted results and experimental data. Regarding the modeling stage, the numerical results indicate that minimization of the part warpage is achieved by reducing the back speed and shortening the scanning lines during the building process. Both residual stress and deformation can be further reduced if preheating the baseplate is added before L-DED.
dc.description.sponsorshipThis research was funded by the National Key Technologies R & D Program (No. 2016YFB1100104) and the China Scholarship Council (No. 201906290011). Funding from the Spanish Ministry of Economy and Competitivity (MINECO) under the ADaMANT project: Computational Framework for Additive Manufacturing of Titanium Alloy Components (ref: DPI2017-85998-P), within the Excellency Programme for Knowledge Generation, is gratefully acknowledged. CIMNE is the recipient of the Severo Ochoa Award of Excellence from MINECO. This work was also funded by the European KYKLOS 4.0 project: An Advanced Circular and Agile Manufacturing Ecosystem based on rapid reconfigurable manufacturing process and individualized consumer preferences (No. H2020-DT-2019-1).
dc.language.isoeng
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)
dc.rightsAttribution 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.subject.lcshTitanium alloys
dc.subject.otherLaser directed energy deposition (L-DED)
dc.subject.otherThermo-mechanical simulation
dc.subject.otherProcess parameters
dc.subject.otherScanning pattern
dc.subject.otherPart warpage
dc.subject.otherResidual stress
dc.titleModeling of the effect of the building strategy on the thermomechanical response of Ti-6Al-4V rectangular parts manufactured by laser directed energy deposition
dc.typeArticle
dc.subject.lemacTitani -- Aliatges
dc.contributor.groupUniversitat Politècnica de Catalunya. RMEE - Grup de Resistència de Materials i Estructures en l'Enginyeria
dc.identifier.doi10.3390/met10121643
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://www.mdpi.com/2075-4701/10/12/1643
dc.rights.accessOpen Access
local.identifier.drac30785157
dc.description.versionPostprint (published version)
dc.relation.projectidinfo:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/DPI2017-85998-P/ES/MARCO COMPUTACIONAL PARA LA FABRICACION ADITIVA DE COMPONENTES DE ALEACIONES DE TITANIO/
local.citation.authorLu, X.; Cervera, M.; Chiumenti, M.; Li, J.; Ji, X.; Zhang, G.; Lin, X.
local.citation.publicationNameMetals
local.citation.volume10
local.citation.number20
local.citation.startingPage1643:1
local.citation.endingPage1643:18


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