An iron?carbon steel, containing 0.5 percent carbon, has a microstructure consisting of 85 percent pearlite and 15 percent ferrite.
(a) Are these the amounts of the constituents that one would expect to find in the steel if it had been slowly cooled from the austenite region?
(b) In a slowly cooled microstructure, pearlite normally has a 7 to 1 ratio of the widths of the ferrite and cementite lamellae. What would this ratio be in the present case?
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