Question

For an alloy of composition Cu-40%Ag cooling slowly from the melt:

Composition (at% Ag) 0 20 100 1200 2200 quidus 1000 1800 dus ?+L 1600 779°C 800 8.0 71.9 91.2B 1400 1200E 600 1000 vus 400 200 400 100 20 (Cu) Composition (wt% Ag) (Ag)

A)At what temperature does the pro-eutectic (primary) ? phase begin to form? __________

B)At what temperature does the eutectic structure start to appear? _________

C)What is the composition of liquid phase at 780?C? __________

D)What is the mass fraction (amount) of liquid phase at 780?C? _________

E)What is the mass fraction of ? phase at 778?C? __________

F)What is the mass fraction of eutectic ? phase out of the whole alloy at 778?C? __________

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Answer #1

Aser ④ .pao-kutech c phou Xtort, to firm while coolina Rutechc point 9112,-40-0.6IS 서戶ー 40-8 = 0,384- /시 91.2- 1-1 91-2 0231Aser ④ .pao-kutech c phou Xtort, to firm while coolina Rutechc point 9112,-40-0.6IS 서戶ー 40-8 = 0,384- /시 91.2- 1-1 91-2 0231

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