Cadirli, EKaya, HGunduz, M2019-08-012019-08-0120030025-54081873-4227https://dx.doi.org/10.1016/S0025-5408(03)00169-7https://hdl.handle.net/11480/5698Lead-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.eninfo:eu-repo/semantics/closedAccessalloyscrystal growthmicrostructurephase transactionsArticle38455741457147610.1016/S0025-5408(03)00169-72-s2.0-0042784719Q1WOS:000185418000001Q2