45.7 kg of aluminum comprise 35 wt% of a Cu-Al alloy. The temperature is halfway between the upper and lower bounds of the L + h phase region at this composition. How much more aluminum must be added and how much must the resulting liquid mixture be cooled to reach the eutectic point?

Transcribed Image Text:

118 Ideal L B Typical Temperature (°C) 700 600 500 400 300 200 660 Al a+L 5.65 10 548 20 L 33.2 α+0 0+ L 52.5 30 Weight percent copper 40 50 L+ ε 626* L+n 591* 8+n 60