A steel sheet with 3 mm thickness is held at 755 C where the carbon concentration is kept constant at 3.5 at% at one side and at zero at the other one. At steady state condition plot the carbon concentration profile across the sheet and specify the location and concentration between austenite and ferrite phases. Make a linear approximation of the phase diagram by assuming 912 C as the transformation temperature in pure Fe and carbon equilibrium concentrations at 740 C to be 0.1 at% and 2.96 at% in ferrite and austenite, respectively. The diffusion coefficients of carbon at 755 C are approximately 5x10-7 cm2 /s in ferrite and 4x10-9 cm2 /s in austenite