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dc.contributor.authorRezayat, Mohammad
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., Parsa, M., Mirzadeh, H., Cabrera, J. Microstructural investigation of Al-Mg/B4C composite deformed at elevated temperature. "Journal of alloys and compounds", 30 Setembre 2018, vol. 763, p. 643-651.
dc.description.abstractThe microstructure evolution of Al-3wt.%Mg reinforced with 10¿vol% B4C during isothermal compression at temperatures ranging 300–500¿°C at strain rates of 0.001–10 s-1 was investigated by electron backscatter diffraction (EBSD). According to the results, at strain rates lower than 0.01 s-1 and temperatures higher than 400¿°C, the grain size distribution in the microstructure is uniform, dynamic recovery is the predominant softening mechanism and continues recrystallization through lattice rotation is responsible for grain refinement. However, during deformation at higher strain rates or lower temperatures, deformation zones appeared in special locations around particles where microstructure is formed by recovered and hardened grains, and particle stimulating nucleation leaded to partially discontinues dynamic recrystallization which in turns promoted finer average grain and sub-grain size than those in single phase Al-Mg alloy. Moreover, it was found that the variation of grain and sub-grain size with deformation parameters (Zener-Holloman parameter (Z)) can be described by a power law type equation rather than by an initially expected exponential expression.
dc.format.extent9 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.subject.lcshMetallic composites
dc.subject.otherHot deformation
dc.subject.otherAl-Mg alloy
dc.subject.otherMetal matrix composite
dc.subject.otherElectron back scatter diffraction
dc.subject.otherDynamic restoration
dc.titleMicrostructural investigation of Al-Mg/B4C composite deformed at elevated temperature
dc.subject.lemacCompostos metàl·lics
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.; Parsa, M.; Mirzadeh, H.; Cabrera, J.
local.citation.publicationNameJournal of alloys and compounds

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