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Dendritic segregation of manganese
A Heated 3 hours at
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air cooled Alloys Ar3 point austenite grain banded structures carbide structure carbon atoms carbon content CARBON STEEL carburized cementite cent of carbon cent of manganese cooled slowly copper chloride reagent critical range dendrite axes dendrite fillings dendritic segregation dendritic structure distributed form dry sand mold EFFECT OF MANGANESE EUTECTOID POINT eutectoid range eutectoid zone Fe2MnC Fe3C ferrite areas Figure 13 Figure 25 finer grained forged bars furnace cooled gamma iron ganese Heated 1 hour Heated one-half hour high-manganese hour at 840 hypoeutectoid zone impurities Iron and Steel Jour Krivobok low-carbon manganese steels lowers the Ar3 manganese atoms manganese content manganese the pearlite manganese-rich zones microstructure Mn3C nital X 100 nital X 425 pearlite areas pearlite or sorbite phosphorus pieces raise the Ar3 samples segregation by diffusion shown in Figure shows silicon slow-cooled slowly cooled solid solution Steel Inst temperatures tends to segregate uniform concentration uniform distribution Woolwich Arsenal