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Assessing Microstructure Tensile Properties Relationships in Al-7Si-Mg Alloys via Multiple Regression

dc.contributor.authorSilva, Cássio
dc.contributor.authorBarros, André
dc.contributor.authorVida, Talita [UNESP]
dc.contributor.authorGarcia, Amauri
dc.contributor.authorCheung, Noé
dc.contributor.authorReis, Danieli A. P.
dc.contributor.authorBrito, Crystopher [UNESP]
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2023-03-01T20:18:59Z
dc.date.available2023-03-01T20:18:59Z
dc.date.issued2022-06-01
dc.description.abstractThe development of Al-based alloys presumes a detailed understanding of the microstruc-ture evolution during solidification since the as-solidified microstructure also has effects on the subsequent thermo-mechanical processing. In the present investigation Al-7wt.%Si-xMg (x = 0.5 and 1 wt.%) alloys are subjected to transient directional solidification with a view to characterizing the microstructure evolution, with special focus on both dendritic evolution and the inherent features of the Mg2 Si and π-AlSiFeMg intermetallics. Experimental power-type functions relating the primary, secondary and tertiary interdendritic spacings to the solidification cooling rate and growth rate are developed. It is observed that the Mg content added to the Al-7wt.%Si alloy and the consequent increase in the Mg2 Si fraction tends to increase the values of the primary dendritic spacing. However, this same behavior is not verified for the growth evolution of dendritic side branches. A multiple linear regression (MLR) analysis is developed permitting quantitative correlations for the prediction of tensile properties and hardness from microstructural parameters to be established. The increase in the Mg alloy content from 0.5 to 1 was shown to promote an increase in both the ultimate tensile strength (σu) and elongation.en
dc.description.affiliationDepartment of Manufacturing and Materials Engineering University of Campinas UNICAMP
dc.description.affiliationFaculty of Engineering of São João da Boa Vista São Paulo State University UNESP
dc.description.affiliationInstitute of Science and Technology Federal University of São Paulo UNIFESP
dc.description.affiliationUnespFaculty of Engineering of São João da Boa Vista São Paulo State University UNESP
dc.identifierhttp://dx.doi.org/10.3390/met12061040
dc.identifier.citationMetals, v. 12, n. 6, 2022.
dc.identifier.doi10.3390/met12061040
dc.identifier.issn2075-4701
dc.identifier.scopus2-s2.0-85134367129
dc.identifier.urihttp://hdl.handle.net/11449/240482
dc.language.isoeng
dc.relation.ispartofMetals
dc.sourceScopus
dc.subjectAl-Si-Mg alloys
dc.subjectmechanical properties
dc.subjectmicrostructure
dc.subjectregression analysis
dc.subjectsolidification
dc.titleAssessing Microstructure Tensile Properties Relationships in Al-7Si-Mg Alloys via Multiple Regressionen
dc.typeArtigopt
dspace.entity.typePublication
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Engenharia, São João da Boa Vistapt

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