Including: Proeutectoid Steel, Proeutectoid Ferrite, Proeutectoid Cementite
Proeutectoid signifies is a phase that forms (on cooling) before the eutectoid austenite decomposes. It has a parallel with primary solids in that it is the first phase to solidify out of the austenite phase. Thus, if the steel is hypoeutectoid it will produce proeutectoid ferrite and if it is hypereutectoid it will produce proeutectoid cementite.
Associated terms: Phase, Eutectoid, Austenite, Primary Solid, Hypoeutectoid, Hypereutectoid, Ferrite, Cementite
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