Question: 4. Answer the following questions based on the Cu-Ni phase diagram shown in the figure below: a. The components in this system show complete solubility.

4. Answer the following questions based on the Cu-Ni phase diagram shown in the figure below: a. The components in this system show complete solubility. True or False b. What is the melting temperature of Cu? c. What is the melting temperature of Ni? d. What phases are present at points A and B? e. What is the composition of the alloy at point A? f. If a 70 wt%Ni-30 wt% Cu alloy is slowly heated from 1200C to 1500C at what temperature does the first liquid phase form? g. What is the composition of this liquid phase? h. For the 70 wt% Ni-30 wt% Cu alloy at what temperature does the solid completely liquify? i. What is the composition of the last remaining solid phase? Composition (at% NO 0 20 40 60 80 100 1600 1500 1400 1300 1200 1100 1000 Temperature (C) 1085C 1 0 (Cu) 20 Liquid 8/ a 40 60 Composition (wt% Ni) 80 14530 2800 2600 2400 2200 2000 100 (Ni) Temperature (F)

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