The freezing of some continuous binary eutectic mixtures

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Abstract
Directional freezing experiments have been carried out with the binary eutectic mixtures, Al–Ag2Al, Al–CuAl2, Al–Zn, Al–Al3Ni, Ag–Cu, LiF–NaF and NaF–NaCl. Various aspects of eutectic solidification are discussed with particular reference to the importance of solid interfacial energy. The work is divided into three parts. I. A description of the observed microstructures, with discussion of the type of dispersion occurring in unmodified eutectics and the modification of lamellar arrangements by impurity cell formation. II. An account of the development of preferred orientations during the directional freezing of some eutectics. III. Measurements of the interphase separations as functions of the freezing rates and a discussion of the influence of solid interfacial energy upon these.

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