1a. Sketch the iron/equilibrium diagram for the range room temperature to 1000C & up to 1.5% Carbon. Name the phase areas & identify the eutectoid position & composition % ?

b. Draw (sketch) & label the phases for a 0.35% carbon steel, a 0.8% carbon steel & 1.2% carbon steel in the normalized condition. How would the structure of the 0.35% carbon steel be altered if it had been hot worked?

c. What non equilibrium phase would be formed if a 0.35% carbon steel above were quenched from the austenitic phase region of the equilibrium diagram? Why does it not appear on the diagram?, What are the two main properties associated with this phase? What heat treatment process could be carried out on the material to alter these two properties?