Question

Using an iron-carbon phase diagram, calculate the expected phases and volume fraction of each phase at room temperature for the a) the 0.20 wt.% C steel and b) the 0.45 wt.% C steel

Composition (wt.% C)	Furnace temp (°C)	Quench media
0.20	N/A	As Received(Cast)
0.20	900	Water
0.20	900	Oil
0.20	900	Air
0.45	N/A	As Received
0.45	900	Water
0.45	900	Oil
0.45	900	Air

Answer 1

volume fraction = ((wt%of C)/((wt%C/density of Carbon)+(wt%Fe/density Fe) ×1000