For a 99.6 wt% Fe-0.40 wt% C steel at a temperature just below the eutectoid, determine the following (a) composition of Fe3C and ferrite (a) (b) the amount of carbide (cementite) and ferrite (a), in grams, that forms per 100 g of steel (c) the amount of pearlite and proeutectoid ferrite (a), in grams, that forms per 100 g of steel 1600 &\ 1400 1200 T(°C) 1000 Liquid L+Fe3C Y+L V 1148° C (austenite) Y + FeC 800 727° C 600 400 0 3 a + FeC Co, wt% C 4 5 Fe3C (cementite) 6.7 Lecture 14-