calculate the fraction of proeutectoid ferrite and eutectoid ferrite and total ferrite in a slow closed 0.2wt % c steel at temperature just below the cutectoid temperature
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a) Eutectoid composition is 0.77 wt. % carbon so this is a hypereutectoid steel. The proeutectoid phase is the cementite that precipitates at the grain boundaries.
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9.56 Consider 2.0 kg of a 99.6 wt% Fe–0.4 wt% C alloy that is cooled to a temperature just below the eutectoid.
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