A quantitative study of factors influencing lamellar eutectic morphology during solidification
A quantitative study of factors influencing lamellar eutectic morphology during solidification
复制标题
凝固过程中层状共晶形貌影响因素的定量研究
DOI：
--
复制
发表时间：
1981
期刊：
影响因子：
--
通讯作者：
W. Kaukler
中科院分区：
文献类型：
--
作者：
W. Kaukler
The factors that influence the shape of the solid-liquid interface of a lamellar binary eutectic alloy are evaluated. Alloys of carbon tetrabromide and hexachloroethane which serve as a transparent analogue of lamellar metallic eutectics are used. The observed interface shapes are analyzed by computer-aided methods. The solid-liquid interfacial free energies of each of the individual phases comprising the eutectic system are measured as a function of composition using a 'grain boundary groove' technique. The solid-liquid interfacial free energy of the two phases are evaluated directly from the eutectic interface. The phase diagram for the system, the heat of fusion as a function of composition, and the density as a function of composition are measured. The shape of the eutectic interface is controlled mainly by the solid-liquid and solid-solid interfacial free energy relationships at the interface and by the temperature gradient present, rather than by interlamellar diffusion in the liquid at the interface, over the range of growth rates studied.
