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Effect of v addition on the nano-size spherical particles growing on the Fe-bearing intermetallics and silicon phases of gas atomized hypereutectic Al-20Si-5Fe alloys

dc.contributor.authorKilicaslan M.
dc.contributor.authorKilicaslan, MF
dc.date.accessioned2023-05-09T16:05:07Z
dc.date.available2023-05-09T16:05:07Z
dc.date.issued2014-09-05
dc.date.issued2014.01.01
dc.description.abstractIn this study, rapidly solidified hypereutectic Al-20Si-5Fe-XV (X = 0, 0.5, 1 and 1.5) alloys were fabricated by gas atomization in Ar atmosphere. Microstructural and spectroscopic analyses were performed using SEM, SEM - EDS and XRD measurements. Experimental results showed that addition of V to gas-atomized Al-20Si-5Fe alloys led to formation of a refined microstructure composed of finer Si and Fe-bearing intermetallics. Possible refining mechanism of Si phases is the IIT because of Rv:RSi is 1.38 close to the value of 1.65 which is the ideal ratio of radius for the impurity-atom to Si-atom (Ri:RSi). The reason of formation finer of δ-Al4FeSi2 phase with addition of V is that vanadium addition leads to an increment in the thermodynamic stability and a reduction in the free energy of δ-Al4FeSi2 phase. Therefore, finer and modified morphology became more favorable for δ-Al 4FeSi2 phase in terms of thermodynamic. Nanosize Si particles growing on the surface of Fe-bearing intermetallics and micro size polygonal Si phases were observed. There was no effect of V on the number of fine silicon particles growing up on the micro size polygonal Si phases. However, during solidification, addition of V led to an increase in the number of fine silicon particles growing on the Fe-bearing intermetallics. Microhardness measurements showed that there was an increase in the microhardness values of Al-20Si-5Fe alloys with addition of V, in general. ©2014 Elsevier B.V. All rights reserved.
dc.identifier.doi10.1016/j.jallcom.2014.04.020
dc.identifier.eissn1873-4669
dc.identifier.endpage91
dc.identifier.issn0925-8388
dc.identifier.scopus2-s2.0-84899540448
dc.identifier.startpage86
dc.identifier.urihttps://hdl.handle.net/20.500.12597/12909
dc.identifier.volume606
dc.identifier.wosWOS:000336369800016
dc.relation.ispartofJournal of Alloys and Compounds
dc.relation.ispartofJOURNAL OF ALLOYS AND COMPOUNDS
dc.rightsfalse
dc.subjectAl-Si alloys | Fe-bearing intermetallics | Gas-atomization | Rapid solidification
dc.titleEffect of v addition on the nano-size spherical particles growing on the Fe-bearing intermetallics and silicon phases of gas atomized hypereutectic Al-20Si-5Fe alloys
dc.titleEffect of V addition on the nano-size spherical particles growing on the Fe-bearing intermetallics and silicon phases of gas atomized hypereutectic Al-20Si-5Fe alloys
dc.typeArticle
dspace.entity.typePublication
oaire.citation.volume606
relation.isScopusOfPublicationae4ef1e2-dbca-46d4-9f95-d9e470feeffa
relation.isScopusOfPublication.latestForDiscoveryae4ef1e2-dbca-46d4-9f95-d9e470feeffa
relation.isWosOfPublication2a5c1712-d0bc-4675-ab4a-7643f54e5f8b
relation.isWosOfPublication.latestForDiscovery2a5c1712-d0bc-4675-ab4a-7643f54e5f8b

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