Relation between the solidification rate of a binary alloy and the alloying-element distribution coefficient

Аннотация

The change in the rate of equilibrium and nonequilibrium (according to Petrov–Scheil) solidification in binary model and some real solid-solution alloys with a distribution coefficient 0.2–2.5 is comprehensively analyzed. A relation between the solidification rate, on the one hand, and growth restriction factor Q and supercooling parameter P, which are used to determine the grain sizes in as-cast alloys, is revealed.