Consider an ingot being directionally solidified in which no diffusion occurs in the solid.?

Consider an ingot being directionally solidified in which no diffusion occurs in the solid.

a. Sketch the composition profile for the ingot when it is (1) half frozen and (2) completely frozen under conditions of stagnant liquid. Label the starting and ending value of each graph in terms of Co (initial composition) and k (partition coefficient). Also label any points in the middle where the slope suddenly changes.

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