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Microstructure and microhardness of melt-spun Al–25Si–5Fe–XCo (X=0, 1, 3, 5) alloys

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dc.contributor.authorKilicaslan, M. Fatih
dc.contributor.authorYilmaz, Fikret
dc.contributor.authorErgen, Semra
dc.contributor.authorHong, Soon-Jik
dc.contributor.authorUzun, Orhan
dc.date.accessioned2026-01-02T22:57:04Z
dc.date.issued2013-03-01
dc.description.abstractAbstract The microstructure and microhardness evolution of melt-spun Al–25Si–5Fe alloy with Co addition (1, 3 and 5 wt.%) were investigated. Microstructural and spectroscopic analyses demonstrate that Co could refine primary Si grains and change their morphology because it causes higher constitutional undercooling and has large mixing enthalpy with Si. Especially, 3 wt.% Co addition causes homogeneously distributed fine spherical Si particles in the rapidly solidified Al–25Si–5Fe alloy. The size of the spherical silicon particles was from around 200 to 600 nm near the wheel side region, and it varied from 800 nm to 1.3 μm at the air side. The optimum ratio of Si and Co should be between 6 and 8.3 to form spherical Si grains in Al–25/30Si–5Fe alloys. A considerable improvement in microhardness value (from 211 to 370 HV) was obtained with the addition of Co.
dc.description.urihttps://doi.org/10.1016/j.matchar.2012.12.006
dc.description.urihttps://dx.doi.org/10.1016/j.matchar.2012.12.006
dc.description.urihttps://hdl.handle.net/20.500.12628/22155
dc.description.urihttps://aperta.ulakbim.gov.tr/record/13993
dc.identifier.doi10.1016/j.matchar.2012.12.006
dc.identifier.endpage22
dc.identifier.issn1044-5803
dc.identifier.openairedoi_dedup___::2b3e58473dbe0976473de834ecfe5c5e
dc.identifier.orcid0000-0003-1293-6538
dc.identifier.orcid0000-0001-7586-9075
dc.identifier.scopus2-s2.0-84873020485
dc.identifier.startpage15
dc.identifier.urihttps://hdl.handle.net/20.500.12597/35684
dc.identifier.volume77
dc.identifier.wos000316536800003
dc.language.isoeng
dc.publisherElsevier BV
dc.relation.ispartofMaterials Characterization
dc.rightsOPEN
dc.subjectnano-technology
dc.subjectmechanical engineering
dc.subjectengineering and technology
dc.titleMicrostructure and microhardness of melt-spun Al–25Si–5Fe–XCo (X=0, 1, 3, 5) alloys
dc.typeArticle
dspace.entity.typePublication
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