please also specify how to measure the weight fraction for Austenite, Ferrite(delta and alpha) using lever rule.

A sample of liquid iron with 1 wt\% carbon, initially at 1.600C, is slowly cooled. (a) What phases, of what compositions, are present at 1.400C ? What are the weight fractions of each, assuming equilibrium behavior? (b) What phases, of what compositions, are present at 1000C ? What are the weight fractions of each, assuming equilibrium behavior? (c) What phases, of what compositions, are present at 727C ? What are the weight fractions of each, assuming equilibrium behavior? (d) What phases, of what compositions, are present at 600C ? What are the weight fractions of each, assuming equilibrium behavior? Comnneitinn tatod AJ Figure 9.24 The iron-iron carbide phase diagram