Effect of growth rates and temperature gradients on the lamellar spacing and the undercooling in the directionally solidified Pb-Cd eutectic alloy

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dc.contributor.authorCadirli, E
dc.contributor.authorKaya, H
dc.contributor.authorGunduz, M
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2003
dc.departmentNiğde ÖHÜ
dc.description.abstractLead-cadmium of high (99.99%) purity eutectic alloy was melted in a graphite crucible under vacuum atmosphere. These regular eutectic alloys were directionally solidified upward with a constant growth rate of 8.3 mum/s, and different temperature gradients G (similar to1.6-6.4 K/mm range), and also with a constant temperature gradient (similar to6.4 K/mm) and different growth rates V (8.3-165.5 mum/s range) in the Bridgman-type directional solidification furnace. The lamellar spacings lambda were measured from both transverse section and longitudinal section of the specimen. The variations of lambda with respect to G and V were determined by using linear regression analysis. The dependence of lambda on DeltaT(e) (the extremum undercooling) was also analysed. The variation of DeltaT(e) with Vat constant G and with G at constant V were investigated. According to these results, it has been found that lambda decreases with the increasing values of G and V Also DeltaT(e) increases with increasing V for a constant G and with the increasing G for a given V, respectively. The results obtained in this work have been compared with the Jackson-Hunt eutectic theory and the previous experimental results. (C) 2003 Elsevier Ltd. All rights reserved.
dc.identifier.doi10.1016/S0025-5408(03)00169-7
dc.identifier.endpage1476
dc.identifier.issn0025-5408
dc.identifier.issn1873-4227
dc.identifier.issue45574
dc.identifier.scopus2-s2.0-0042784719
dc.identifier.scopusqualityQ1
dc.identifier.startpage1457
dc.identifier.urihttps://dx.doi.org/10.1016/S0025-5408(03)00169-7
dc.identifier.urihttps://hdl.handle.net/11480/5698
dc.identifier.volume38
dc.identifier.wosWOS:000185418000001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.relation.ispartofMATERIALS RESEARCH BULLETIN
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectalloys
dc.subjectcrystal growth
dc.subjectmicrostructure
dc.subjectphase transactions
dc.titleEffect of growth rates and temperature gradients on the lamellar spacing and the undercooling in the directionally solidified Pb-Cd eutectic alloy
dc.typeArticle

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