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HomeMaterials Science ForumMaterials Science Forum Vols. 790-791Graphite Growth Morphologies in Cast Iron

Graphite Growth Morphologies in Cast Iron

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Abstract:

Graphite growth morphology was studied by using InLense detector on FEG-SEM after performing ion etching on the samples. Star like and circumferential growth mechanism of graphite was observed in the graphite nodules. Pure ternary alloy of hypo eutectic and hyper eutectic composition was treated with pure Mg, Ca and Sr, to study the effect of O and S concentration in the melt, on the transition of graphite morphology from nodular to vermicular/compacted and flake graphite. The change in the melt composition between the austenite dendrites due to micro-segregation of S, O and inoculants and their possible effects on the transition of graphite morphologies as well as the nucleation of new oxides/sulfides particles is discussed with the help of thermodynamics.

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Solidification and Gravity VI

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Periodical:

Materials Science Forum (Volumes 790-791)

Pages:

458-463

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.790-791.458

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Online since:

May 2014

Authors:

Haji Muhammad Muhmond*, Hasse Fredriksson

Keywords:

Cast Iron, Clusters, Graphite Morphology, Ion Etching, Microsegregation, Thermodynamic, Transition

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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