a- Give the melting temperature of the silver and the eutectic alloy in degrees Celsius; b- Give the solubility of Cu atoms in solid Ag solution in atomic percentage at 800C. Consider an alloy with 10% by weight copper (Cu) and 90% silver (Ag) and determine: c- the composition of the first solid to be formed during solidification; d- the composition of the last drop of liquid during solidification; e- the composition of the most Ag-rich phase at 850C; f- the mass fractions of the phases present at 600C. g- the constituents forming the microstructure of the material at room temperature. h- draw the temperature-time cooling curve of the material.

Composition (at% Ag) 20 40 60 80 0 1200 100 2200 A 2000 1000 Liquid 1800 F a +L 1600 a @ 800 B+L 779C (Te) E E B 8.0 (Cap) G B 1400 Temperature (C) 71.9 (Ce) 91.2 (CBE) Temperature (F) 1200 600 1000 a +B 800 400 600 H 200 0 20 40 60 80 400 100 (Cu) Composition (wt% Ag) (Ag)