Consider the Cu-Ag phase diagram (Figure 9.7 p. 298). At a temperature of 900 degree C and a composition of 40 wt% Ag, how much of each phase is present? Composition (at% Ag) 20 40 60 80 100 1200 2200 A 2000 -Liquidus 1000 Liquid 1800 Solidus 1600 B+L 800 B 779C (Tg) 8.0 1400 71.9 (Cg) 91.2 (Cg) (Cog) 1200 600 1000 Solvus 800 400 600 H 200 0 400 100 20 40 60 80 (Cu) Composition (wt% Ag) (Ag) W. = 0.1 We = 0.9 WL = 0.4 W. = 0.4 W. = 0.1 WB = 0.6 Wg = 0.6 WL = 0.9 Temperature ("C) Temperature ("F)