Question#1 A copper-nickel alloy of composition 75 wt% Ni-25 wt% Cu is slowly heated from a temperature of 1300C. (a) At what temperature does the first liquid phase form? (b) What is the composition of this liquid phase? (c) At what temperature does complete melting of the alloy occur? Composi tien (at% Ni) 20 40 60 80 100 1600 2800 1500 Liquid 1453C 2600 1400 Solidus lire Liquidus line 2400 1300 1200 2200 1100 2000 1085C 1000 20 40 60 80 100 (Cu Compos tion (wt6 NO ENI) (CLO_3): (Cognitive Level C4 (Analyzing) (PLO_4, i.e, Investigation) Question#2 Consider 1.0 kg of austenite containing 1.15 wt% C, cooled to below 725C. (a) What is the hypoeutectoid phase? (b) How many kilograms each of total ferrite and cementite form? (c) How many kilograms each of pearlite and the hypoeutectoid phase form? 19.) anjeadua Temperature (F)