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Direct aging of AlSi10Mg alloy produced by powder bed fusion – laser beam

2026-05Artigo científico Acesso aberto
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dc.contributor.authorBatalha, R. L.
dc.contributor.authorFerreira, C. M.
dc.contributor.authorSilva, A. C.
dc.contributor.authorReis, L.
dc.contributor.authorCláudio, R.
dc.contributor.authorCarmezim, M. J.
dc.contributor.authorRamasamy, P.
dc.contributor.authorGodefroid, L. B.
dc.contributor.authorde Araújo, S. C.
dc.contributor.authorFaria, G. L. de
dc.contributor.authorMorais, P. J.
dc.contributor.institutionDCM - Departamento de Ciência dos Materiais
dc.contributor.pblElsevier Editora Ltda
dc.date.accessioned2026-05-15T10:45:01Z
dc.date.available2026-05-15T10:45:01Z
dc.date.issued2026-05
dc.descriptionPublisher Copyright: © 2026 The Authors.
dc.description.abstractThe AlSi10Mg alloy is widely used in metal additive manufacturing (AM), yet optimal post-processing routes for components produced by Powder Bed Fusion-Laser Beam (PBF-LB/M) remain unclear due to their highly refined and non-equilibrium microstructures. Conventional T6 heat treatments, effective for cast alloys, often cause softening in PBF-LB/M AlSi10Mg. This work establishes aging curves through a systematic assessment of temperature-time combinations and correlates them with microstructural evolution and mechanical behavior. The as-built alloy exhibited a supersaturated and highly refined non-equilibrium microstructure, resulting in high tensile strength. Among all evaluated conditions, direct aging at 150 °C for 2 h (DA 150/2.0) produced the highest hardness and tensile performance without prior solution treatment. Natural aging for at least 48h was required to achieve peak hardness. DA 150/2.0 preserved the eutectic Si network while promoting dense precipitation of nanometric Si particles, which improved strengthening via the Orowan mechanism. This condition increased yield and ultimate tensile strengths by 17% and 13%, respectively, and enhanced ductility relative to the as-built state. Higher-temperature treatments dissolved the cellular structure and coarsened Si, reducing strength. Overall, this study demonstrates that low-temperature direct aging offers an efficient route to optimize the strength-ductility balance of PBF-LB/M AlSi10Mg without solution treatment.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent15
dc.format.extent63806
dc.identifier.doi10.1016/j.jmrt.2026.03.256
dc.identifier.issn2238-7854
dc.identifier.otherPURE: 162298027
dc.identifier.otherPURE UUID: efbf1a87-559a-4600-ab2f-9670d3d3987d
dc.identifier.otherScopus: 105034973209
dc.identifier.urihttp://hdl.handle.net/10362/203130
dc.identifier.urlhttps://www.scopus.com/pages/publications/105034973209
dc.identifier.urlhttps://www.webofscience.com/wos/woscc/full-record/WOS:001740114900001
dc.language.isoeng
dc.peerreviewedyes
dc.subjectAdditive manufacturing
dc.subjectAging curves
dc.subjectAl–Si alloys
dc.subjectHeat treatment
dc.subjectPowder bed fusion
dc.subjectPrecipitation kinetics
dc.subjectCeramics and Composites
dc.subjectBiomaterials
dc.subjectSurfaces, Coatings and Films
dc.subjectMetals and Alloys
dc.titleDirect aging of AlSi10Mg alloy produced by powder bed fusion – laser beamen
dc.title.subtitleEliminating the need for solution heat treatmenten
dc.typejournal article
degois.publication.firstPage3057
degois.publication.lastPage3071
degois.publication.titleJournal of Materials Research and Technology
degois.publication.volume42
dspace.entity.typePublication
rcaap.rightsopenAccess

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