Effect of two-pass friction stir processing on the microstructure and mechanical properties of as-cast binary Al-12Si alloy

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dc.authorid0000-0002-9378-3870en_US
dc.contributor.authorAktarer, S. M.
dc.contributor.authorSekban, D. M.
dc.contributor.authorSaray, Onur
dc.contributor.authorKucukomeroglu, T.
dc.contributor.authorMa, Z. Y.
dc.contributor.authorPurcek, G.
dc.date.accessioned2021-03-20T20:15:09Z
dc.date.available2021-03-20T20:15:09Z
dc.date.issued2015
dc.departmentBTÜ, Mühendislik ve Doğa Bilimleri Fakültesi, Makine Mühendisliği Bölümüen_US
dc.description.abstractThe effect of two-pass friction stir processing (FSP) on the microstructural evolution, mechanical properties and impact toughness of as-cast Al-12Si alloy was investigated systematically. Severe plastic deformation imposed by FSP resulted in a considerable fragmentation of the needle-shaped eutectic silicon particles into the smaller ones. The length of eutectic Si particles decreased from 27 +/- 23 mu m to about 2.6 +/- 2.4 mu m. The average aspect ratio of 6.1 +/- 5.1 for eutectic Si particles in the as-cast state decreased to about 2.6 +/- 1.0 after FSP with a corresponding increase in their roundness. The hardness, strength, ductility and impact toughness of the alloy increased simultaneously after two-pass FSP. The increase in the yield and tensile sirength values after FSP was about 20% and 29%, respectively. The FSPed alloy exhibited 25% elongation to failure and 15% uniform elongation which were almost seven times and five times higher, respectively, than those of the as-cast alloy. The hardness of the alloy increased from 58 Hv0.5 for the as-cast state to about 67 Hv0.5 after FSP. The absorbed energy during impact test increased to about 8.3 J/cm(2) after FSP, which is about seven times higher than that of the as-cast alloy. Improvements in all mechanical properties were mainly attributed to the radical changes of the shape, size arid distribution of the eutectic silicon particles along with the breakage and refined of the large alpha-Al grains during two-pass FSP. (C) 2015 Elsevier B.V. All rights reserved.en_US
dc.identifier.doi10.1016/j.msea.2015.03.111en_US
dc.identifier.endpage319en_US
dc.identifier.issn0921-5093
dc.identifier.issn1873-4936
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage311en_US
dc.identifier.urihttp://doi.org/10.1016/j.msea.2015.03.111
dc.identifier.urihttps://hdl.handle.net/20.500.12885/1156
dc.identifier.volume636en_US
dc.identifier.wosWOS:000355886100038en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorSaray, Onur
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofMaterials Science And Engineering A-Structural Materials Properties Microstructure And Processingen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectFriction stir processingen_US
dc.subjectAl-12Si alloyen_US
dc.subjectMicrostructureen_US
dc.subjectHardnessen_US
dc.subjectTensile propertiesen_US
dc.subjectImpact toughnessen_US
dc.titleEffect of two-pass friction stir processing on the microstructure and mechanical properties of as-cast binary Al-12Si alloyen_US
dc.typeArticleen_US

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