(30 points) Problem 8.22. from the Book. Consider an alloy containing 70wt%Ni and 30wt%Cu (see Fig. 8.5). (a) At 1350C make a phase analysis assuming equilibrium conditions. In the phase analysis, include the following: (i) What phases are present? (ii) What is the chemical composition of each phase? (iii) What amount of each phase is present? (b) Make a similar phase analysis at 1500C. (c) Sketch the microstructure of the alloy at each of these temperatures by using circular microscopic fields. Figure 0.2