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Solidification and heat-treatment conditions affecting the tensile properties and fracture feature of an automotive alsimg alloy

2023Journal article Open access
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dc.contributor.authorBarbosa, Carolina
dc.contributor.authorAzevedo, Hugo
dc.contributor.authorCosta, Sharlane
dc.contributor.authorRibeiro, J.E.
dc.contributor.authorCarlos, José
dc.contributor.authorCosta, Tiago
dc.contributor.authorRocha, Otavio
dc.date.accessioned2017-05-25T15:05:21Z
dc.date.available2017-05-25T15:05:21Z
dc.date.issued2023
dc.description.abstractIn this work, a study on the interrelationship between the solidification and heat-treatment processes parameters with tensile properties and fracture feature was performed with an automotive AlSiMg alloy. For that, samples of the horizontally solidified Al7Si0.3 Mg (wt.%) alloy were subjected to the T6-heat treatment, and tensile tests were performed on both investigated samples, under conditions established from the literature. The solidification conditions such as growth and cooling rates and the secondary dendritic spacing (V-L and T-R and lambda(2), respectively) and their effects on the ultimate tensile strength (sigma(UTS)) and elongation (E%) were evaluated. Higher sigma(UTS) values were observed in the heat-treated samples and finer microstructures resulted in a better E% performance. Analysis by SEM/EDS fractography on both samples showed a mix between brittle and ductile fractures, constituted by cleavage facets, secondary cracks, facets covered with micro-voids, tear ridges and dimples. This allowed the deduction of the occurrence of a transition of a transition from ductile to brittle fracture along the solidified ingot as well as the predominance of brittle fracture in the heat-treated samples.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBarbosa, Carolina; Azevedo, Hugo; Costa, Sharlane; Ribeiro, J.E.; Carlos, José; Costa, Tiago; Rocha, Otavio (2023). Solidification and heat-treatment conditions affecting the tensile properties and fracture feature of an automotive alsimg alloy. Silicon. eISSN 1876-9918. 15:11, p. 4931-4942pt_PT
dc.identifier.doi10.1007/s12633-023-02409-3
dc.identifier.issn1876-990X
dc.identifier.urihttp://hdl.handle.net/10198/14283
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectTransient solidificationpt_PT
dc.subjectHeat treatmentpt_PT
dc.subjectMicrostrutcurept_PT
dc.subjectFracturept_PT
dc.subjectTensile propertiespt_PT
dc.titleSolidification and heat-treatment conditions affecting the tensile properties and fracture feature of an automotive alsimg alloypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleSilicon
person.familyNameRibeiro
person.givenNameJ.E.
person.identifierR-000-6Y8
person.identifier.ciencia-id0F15-FB62-29DB
person.identifier.orcid0000-0001-6300-148X
person.identifier.ridG-3839-2018
person.identifier.scopus-author-id25638652400
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationc90169e6-7889-4270-a096-35b98c75f9f9
relation.isAuthorOfPublication.latestForDiscoveryc90169e6-7889-4270-a096-35b98c75f9f9

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