Abstract
This paper reviews several fundamental aspects of the rapid solidification of metals and alloys. Different methods of measuring cooling rates during rapid solidification are described, and the observed cooling curves are analysed according to various cooling models. The experimental effects of rapid solidification conditions on heat transfer coefficient and cooling rate in the vicinity of the solidification point are also described, and the efficiencies of different rapid solidification processes are compared. Measured undercoolings and the shape of the solidification arrest are analysed according to various models of nucleation and growth during solidification, and the effects of cooling rate and undercooling on important microstructural features such as grain size, dendrite arm spacing, and extent of segregation are discussed.
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