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Mechanism of free sulfur influence on the eutectic cell count and transition from graphite to cementite eutectic in cast iron Part I. Theoretical background

E. Fraś, M. Górny

Abstract

work an analytical solution of general validity is used to explain the mechanism of free sulfur influence on the cell count and on the transition from graphite to cementite eutectic in cast iron. It is found that this transition can be related to the nucleation potential of graphite (represented by eutectic cell count Nv), the growth rate coefficient of graphite eutectic cell, µ the temperature range, ∆Tsc and the pre-eutectic austenite volume fraction, fγ.

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Key concepts: Eutectic system, Cementite, Materials science, Cast iron, Graphite, Nucleation, Metallurgy, Austenite