s. (15 points) Four kilograms ) what temperature muistns of steel containing 0.50 wt% carbon is to be heat treated. b) if slowly cooled from the Austenite phase, what jsrthe proeutectoid phase that is formed? c) how many kilograms of Pearlite will be in the steel when cooled to room temperature? d) compute the mass fractions 6t Péfrnite and Cemente in Peartite e) the microstructure of a different iron-carbon alloy consists of proeutectoid ferrite and pearlite. The containing 0.5 it be heated above to create a single solid phase/ rerrne 69 mass fractions of these are 0.286 and 0.714, respectively. Determine the carbon concentration in alloy -236 Composition (at% C) 10 15 20 25 1600 140c 14008 1394°c 200 1147 C 2.14 4.30 2000 1000 912°c 1500 800 727’C 0.76 0 %, Ferrite 600 ite (FegC) 6. (Fe) Composition (wt% C) ME240, Fall 2017