1. A & B are completely soluble in both liquid and solid states; melting point of A and B are 1800 C and 1450 C respectively. An alloy containing 40 % B starts to solidify at 1710 C by separating crystals of 15 % B. an alloy containing 70 % B starts to solidify at 1550 C by separating crystals of 37 % B. - Construct the phase diagram. - For an alloy containing 70 % B: A- Give the temperature of initial and final solidification. C- Draw the cooling curve B- Give the chemical composition and the amounts of the phases present at 1500C 2- Cu and Ag are completely soluble in each other in liquid state. They form an eutectic mixture at 70 % Ag. The eutectic reaction occurs at 780 C. The melting points of Cu and Ag are 1080 Cand 960 C respectively. The max solubility of Ag in Cu is 8 % and that of Cu in Ag is 9 %. The solid solubility is decreased with temperature to be zero at room temperature. - Construct the equilibrium phase diagram. - Make phase analysis of 70 % Cu 30 % Ag alloy at 1000 C, and at 600 C. 3- Consider the binary eutectic Copper-Silver phase diagram in problem number 2; make phase analysis of alloy 75 wt. % Cu at the following temperatures: 1000 C, 800 C, and 780 C, and also sketch the microstructures.