b) The phase diagram for binary alloy system of Lead-Tin is shown in Figure Q3. In that diagram, composition is given as the weight percentage of Lead (Pb). (i) Label all the phase field on the phase diagram and mark all liquidous, solidous and solvus boundary lines. (ii) Indicate the eutectic point on the phase diagram and determine the eutectic temperature and eutectic composition of Pb. (iii) For alloy containing 45 wt % of Lead, determine the phases present and their compositions for the following temperatures. a. 800C b. 500C C. 300C Page 2 of Scanned with CamScanner (iv) Alloy at point A is cooled down to 350C, Determine the changes of phases and composition of each phase at this point.