16 suppose that a steel of eutectoid composition is cooled to 550°c (1020°f) from 760°c (1400°f) in less than 0.5 s and held at this temperature. (a)how long will it take for the austenite-to-pearlite reaction to go to 50% completion? to 100% completion? (b)estimate the hardness of the alloy that has completely transformed to pearlite.

An open feedwater heater operates at steady state with liquid entering at inlet 1 with t? = 40°c and pl = 1 .2 mpa. water vapor att2-200°c and p2 = 1.2 mpa enters at inlet 2. saturated liquid water exits with a pressure of pa 1.2 mpa. neglect heat transfer with the surroundings and all kinetic and potential energy effects, determine the mass flow rate of steam at inlet 2 if the mass flow rate of liquid water at inlet 1 is given as 2 kg/s.