Question: What is/are the phase(s) that are present and the composition of each of them for (i) 90 wt% Zn-10 wt% Cu at 400 C (750F)

What is/are the phase(s) that are present and the composition of each of them for (i) 90 wt% Zn-10 wt% Cu at 400C (750F) alloy and (ii) 53wt% Zn at 500C (930F) alloy?

Composition (at % Zn) 20 40 60 80 1200 100 2200 2000 a + Liquid 1000 1800 8 + L 1600 800 2 1400 8 Temperature (C) Q 20+R Temperature (F) 8 + L 1200 86 + 600 Y 8 + E 1000 +L + E S" 400 800 7 + By Y + B E + 7 600 200 0 20 40 60 80 400 100 (Zn) (Cu) Composition (wt% Zn)

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