Q1. According to the PbSn binary phase diagram shown above, (a) Find Point A, for a Pb-30wt\% Sn alloy at 225C lies in a two-phase field. Construct a tie-line on the figure and read off the two phases and calculate their \% compositions. (Hint: Use lever rule) (b) The same alloy at Point A is slowly cooled to 200C. At this temperature, identify the phases and calculate their \% compositions. (Hint: Use lever rule) (c) The alloy is cooled further to 150oC. At this temperature, identify the phases and calculate their \% compositions. (Hint: Use lever rule) (d) Show on the figure the microstructure of the alloy during slow cooling from 225C to first 200C and then to 150C. (e) Find the Eutectic Temperature and \% composition in terms of Sn