5. Question 8.22: (3 points) A. Consider an alloy containing 70 wt % Ni and 30 wt % Cu (see Fig. 8.5 in text book). (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 the same phase analysis at 1500C. Temperature (C) 1500 Liquid 1400 W = 53 wt % Ni w=45 wt % Ni 1300C 1300 1200 (c) Sketch the microstructure of the alloy at each of these temperatures by using circular microsc 1100 1084 a L+ai Liquidus line w, = 58 wt % Ni Tie line 1455 Solidus line Solid solution a 0 10 20 30 40 50 60 70 80 90 100% 100% Weight percent nickel Ni Cu