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dc.contributor.authorRezayat, Mohammad
dc.contributor.authorBahremand, M. R.
dc.contributor.authorParsa, M. H.
dc.contributor.authorMirzadeh, Hamed
dc.contributor.authorCabrera Marrero, José M.
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
dc.identifier.citationRezayat, M., Bahremand, M., Parsa, M., Mirzadeh, H., Cabrera, J. Modification of as-cast Al-Mg/B4C composite by addition of Zr. "Journal of alloys and compounds", 15 Novembre 2016, vol. 685, p. 70-77.
dc.description.abstractZirconium was used in Al-Mg/B4C composite to improve compocasting efficiency by increasing particle incorporation. Scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS) results revealed that by addition of zirconium a reaction layer containing Zr, Al, B and C is formed on the interface of B4C-matrix. X-ray diffraction (XRD) analysis of extracted particles unveiled that the ZrB2 phase is the main constituent of this layer. Formation of ZrB2 is an exothermic reaction which can rise temperature locally around particles and agglomerates. Rising temperature around agglomerates in conjunction with turbulent flow of melt facilitates agglomerates wetting and dissolving into molten aluminum. As the result, final product contains more uniformly distributed B4C particles. Besides enhancing compocasting efficiency, addition of Zr and formation of reaction layer by improving particle matrix bonding quality, led to increase in ultimate tensile strength and elongation of the composite around 8% and 30%, respectively. SEM observations of the fracture surfaces confirmed that a proper bonding presents at the interface of particles and matrix in presence of Zr.
dc.format.extent8 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.subject.lcshNanocomposites (Materials)
dc.subject.otherMetal-matrix composites
dc.subject.otherLiquid-solid reactions
dc.subject.otherMechanical properties
dc.subject.otherScanning electron microscopy
dc.subject.otherX-ray diffraction
dc.titleModification of as-cast Al-Mg/B4C composite by addition of Zr
dc.subject.lemacRaigs X -- Difracció
dc.subject.lemacMaterials compostos
dc.contributor.groupUniversitat Politècnica de Catalunya. PROCOMAME - Processos de Conformació de Materials Metàl·lics
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
local.citation.authorRezayat, M.; Bahremand, M.; Parsa, M.; Mirzadeh, H.; Cabrera, J.
local.citation.publicationNameJournal of alloys and compounds

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