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dc.contributor.authorLattanzi, Lucia
dc.contributor.authorDi Giovanni, Maria Teresa
dc.contributor.authorGiovagnoli, Maverick
dc.contributor.authorFortini, Annalisa
dc.contributor.authorMerlin, Mattia
dc.contributor.authorCasari, Daniele
dc.contributor.authorDi Sabatino Lundberg, Marisa
dc.contributor.authorCerri, Emanuela
dc.contributor.authorGaragnani, Gian Luca
dc.identifier.citationMetals. 2018, 8 (4), 224.nb_NO
dc.description.abstractIn recent years, the influence of Ni on high-temperature mechanical properties of casting Al alloys has been extensively examined in the literature. In the present study, room temperature mechanical properties of an A356 alloy with Ni additions from 0.5 to 2 wt % were investigated. The role of Ni-based compounds and eutectic Si particles in reinforcing the Al matrix was studied with image analysis and was then related to tensile properties and microhardness. In the as-cast condition, the formation of the 3D network is not sufficient to determine an increase of mechanical properties of the alloys since fracture propagates by cleavage through eutectic Si particles and Ni aluminides or by the debonding of brittle phases from the aluminum matrix. After T6 heat treatment the increasing amount of Ni aluminides, due to further addition of Ni to the alloy, together with their brittle behavior, leads to a decrease of yield strength, ultimate tensile strength, and Vickers microhardness. Despite the fact that Ni addition up to 2 wt % hinders spheroidization of eutectic Si particles during T6 heat treatment, it also promotes the formation of a higher number of brittle Ni-based compounds that easily promote fracture propagation.nb_NO
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.titleRoom temperature mechanical properties of A356 alloy with Ni additions from 0.5 Wt to 2 Wt%nb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.localcode© 2018 by the authors. Submitted for possible open access publication under the terms and conditions of the Creative Commons Attribution (CC BY) license (
cristin.unitnameInstitutt for materialteknologi

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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal