Eutectic transformation: Consider the following Pb-Sn phase diagram

Eutectic transformation: Consider the following Pb-Sn phase diagram (a) Schematic show the microstructural evolution in the system along the composition lines A, B and C as temperature is decreased from 350 degrees C to 100 degrees C. (b) Among the three compositions, which ones possess a Eutectic transition? Determine the fraction of Eutectic alpha and beta phases at T = 100 degrees C for those compositions. (c) Show that maximal solidification velocity is given by , where D is the diffusivity Sn atoms in liquid, T is the supercooling, and * is the critical inter-laminar spacing. (d) How * depends on T? Together with the equation given in (c), show