Q\# 4. For a 68 wt\% Zn32 wt\% Cu alloy, make schematic sketches of the microstructure that would be observed for conditions of very slow cooling at the following temperatures: 1000C(1830F),760C(1400F) 600C(1110F), and 400C(750F). Label all phases and indicate their approximate compositions. On the basis of the locations of the four temperature-composition points, schematic sketches of the four respective microstructures along with phase compositions