Use the phase diagram below. A copper-nickel alloy (53 wt% Ni and 47 wt% Cu) is 1) heated to 1400°C, and then 2) rapidly cooled to 1300 °C and keep at this temperature for long enough time to reach to an equilibrium condition; and then 3) the temperature is quenched to room temperature.
What is the phase/s after process 2) ?

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Use the phase diagram below. A copper-nickel alloy (53 wt% Ni and 47 wt% Cu) is 1) heated to 1400°C, and then 2) rapidly cooled to 1300 °C and keep at this temperature for long enough time to reach to an equilibrium condition; and then 3) the temperature is quenched to room temperature.

What is the phase/s after process 2) ?

O A. a-solid + asolid (a, the same structure but different composition with a)
O B. Liquid + a-solid
OC. a-solid
OD. Liquid

Temperature, °C 1500 1400 1300 1200 1100 100% Cu 1300°C -1084? Liquid 10 153 wt% Niv w = 45 wt% Ni 20 30 L+a 40 C 50 60 Weight percent nickel w, = 58 wt% Ni A B 1455- Solid solution a 70 80 90 100% Ni O A. a-solid + a'solid (a', the same structure but different composition with a) O B. Liquid + a-solid OC. a-solid OD. Liquid

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