  A theory of two-phase eutectic growth for a multicomponent alloy is
presented. This theory employs the thermodynamic equilibrium at the
solid/liquid interface and thus makes it possible to use standard CALPHAD
databases to determine the effects of multicomponent phase equilibrium on
eutectic growth. Using the same hypotheses as the Jackson Hunt theory, we find
that the growth law determined for binary alloys in the Jackson Hunt theory can
be generalized to systems with N elements. In particular, a new model is
derived from this theory for ternary two-phase eutectics. The use of this model
to predict the eutectic microstructure of systems is discussed.
