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c) If a eutectoid steel is cooled from 800°C to 700°C and left at that temperature for a number of hours, what change do you expect? (3 Marks) d) If a piece of steel having 0.8 wt% carbon has a martensitic structure, can it be converted to a fully pearlitic structure by holding it at 700°C? (3 Marks)
f) A piece of steel containing 0.2 wt%C has an initial microstructure of coarse ferrite and pearlite. Discuss briefly the heat treatment temperature, holding time, heat treatment atmosphere and microstructural changes for annealing of this steel. (5 Marks)