Temperature/°C Problem 4 (20 points) For a 35 wt% Ni - 65 wt% Cu alloy at twelve hundred fifty degrees Centigrade, what phases(s) is (are) present? What is (are) the composition(s) of the phase(s)? Calculate the relative amount of each phase present. 1600 Liquid (L) 1500 1455 °C 1400 Solidus Liquidus 1300 Line Line 1200 SS+L 1100 1085 °C Solid Solution (SS) 1000 T T 0 20 40 60 80 100 (Cu) Composition/wt % Ni (Ni)