Temperature °C 7001 Liquid region 600- 500- 400- 300- Solidus line 200- 100- Liquidus line Pasty region B Solid region 0 10 20 30 40 50 60 70 80 90 100 % Metal B Figure 1 (1 Mark) a. Determine melting temperatures of metal A and B based on Figurel b. Consider an alloy containing 50 wt% metal A undergone slow cooling process from 700 °C to room temperature. Based on the phase diagram (Figure 1), i Determine the temperature of the first solid formed. (1 Mark) ii. Determine the phases present at 400 °C and the amount of each phase present. (2 Marks) Sketch the microstructure during the cooling process (at 700 °C, 400 °C, and room temperature) by using 2 cm diameter circular fields. (2 Marks) c. Determine the solidification temperature of the alloy if composition of metal A is 80 wt% (1 Mark)