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Investigation of phase selection hierarchy in Mn-Al alloys

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dc.contributor.author Genç, Ayşe Merve
dc.contributor.author Acar, Özgün
dc.contributor.author Turan, Servet
dc.contributor.author Kalay, İlkay
dc.contributor.author Savacı, Umut
dc.contributor.author Kalay, Yunus Eren
dc.date.accessioned 2021-06-17T08:12:07Z
dc.date.available 2021-06-17T08:12:07Z
dc.date.issued 2019-12
dc.identifier.citation Genç, Ayşe Merve...et al. (2019). "Investigation of phase selection hierarchy in Mn-Al alloys", Intermetallics, Vol. 115. tr_TR
dc.identifier.issn 0966-9795
dc.identifier.issn 1879-0216
dc.identifier.uri http://hdl.handle.net/20.500.12416/4820
dc.description.abstract Primarily attributed to the formation of the ferromagnetic tau-phase, near equiatomic composition of Mn-Al have recently received much attention in permanent magnet industry. Several mechanisms have been proposed in literature for the tau-phase formation but controversy still arises regarding the dominating mode. In the current work, MnAl-based alloys having different compositions in a range between Mn50.5Al49.5 and Mn57Al43 have been studied by means of in-situ high energy X-ray diffraction, differential scanning calorimetry (DSC) and magnetic measurements. Synchrotron and DSC experiments showed the dependence of the tau-MnAl on the intermediate disordered epsilon'-phase. Alloys having 53.4 at% or less Mn (S1, S2) followed a transformation route of epsilon+epsilon'-> tau ->beta+gamma(2) upon annealing. Alloys having more than 53.4 at% of Mn had only epsilon-phase. High energy X-ray diffraction patterns showed that epsilon-phase directly transformed into stable phases in the absence of epsilon'-phase. It is observed that epsilon' not only promoted the ferromagnetic tau-phase but also stabilized it by delaying the nucleation of stable phases. tr_TR
dc.language.iso eng tr_TR
dc.relation.isversionof 10.1016/j.intermet.2019.106617 tr_TR
dc.rights info:eu-repo/semantics/closedAccess tr_TR
dc.subject Permanent Magnets tr_TR
dc.subject Ferromagnetic Tau-Phase tr_TR
dc.subject Phase Transitions tr_TR
dc.subject Synchrotron Radiation tr_TR
dc.subject X-Ray Diffraction tr_TR
dc.subject Electron Microscopy tr_TR
dc.title Investigation of phase selection hierarchy in Mn-Al alloys tr_TR
dc.type article tr_TR
dc.relation.journal Intermetallics tr_TR
dc.contributor.authorID 101579 tr_TR
dc.identifier.volume 115 tr_TR
dc.contributor.department Çankaya Üniversitesi, Mühendislik Fakültesi, Malzeme Bilimi ve Mühendisliği Bölümü tr_TR


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