Answer the following questions in referring to the Cu-Zn phase diagram: Composition (at% Zn) 20 60 80 100 1200 1000 B+L

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Answer The Following Questions In Referring To The Cu Zn Phase Diagram Composition At Zn 20 60 80 100 1200 1000 B L 1 (160.65 KiB) Viewed 63 times

Answer the following questions in referring to the Cu-Zn phase diagram: Composition (at% Zn) 20 60 80 100 1200 1000 B+L 800 Temperature (°C) 600 400 200 + Liquid 8 + L 12200 2000 1800 1600 1400 1. M+L 1200 1000 800 600 Temperature (°F) €+" 60 80 100 0 40 Composition (wt% Zn) (Zn) (Cu) [a] What phases are present for an alloy with the composition 30 wt%Zn-70 wt% Cu at 900°C? What is the composition of the phase or phases present in part [a]? [c] What is the maximum solid solubility (in wt%) of Cu (solute) in Zn (solvent) in the n phase? [d] A different unknown alloy was analyzed and it was found that two phases co- exist in equilibrium - a solid a phase and a solid B phase. The ß phase was measured to have a composition of 40 wt%Zn-60 wt% Cu. What was the temperature? [e] State a temperature and system composition where the & phase and n phase coexist. 400 3