Question

A lead-tin alloy of composition 40 wt% Sn is cooled down from temperature 300^oC to 100^oC (Figure in Problem 6). Draw the microstructure at temperatures 300^oC, 200⁰C and 100^oC. Approximate the respective C_L , C_? and C_? at each of these temperatures. Using lever rule compute the respective mass fraction of L, ?, and ? at each of these temperatures. Also at each of these points show C_o is 40% using conservation of mass balance equation.

Answer 1