Phase Diagrams 9. Cite the phases present, phase compositions, and the relative weight fraction of the phases for the following three points on the isomorphous binary phase diagram of Cu and Ni. TC C) Cu-Ni system 1600 1500- T(C) L (liquid) TA A 1400 1300- 1100 1000, 1200 a (FCC solid solution) liquidus L+0 solidus 1300-L (liquid) liquidus L+a TB e B solidus 1200 L+a a Tc (solid) C 201 40 60 80 100 wt% Ni 20 30 35 40 50 Co wt% Ni (a) 35 wt% Ni and temperature of TA. (5 pts.) Liquid only present 35 wt % Ni-65% lu (b) 35 wt% Ni and temperature of To. (5 pts.) Ltd phose present -4 (c) 35 wt% Ni and temperature of Tc. (5 pts.) Solid & Mase present only 35% Ni - 65% 6