Conclusions
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1.
Cementite is enriched with manganese during graphitization annealing of white cast iron.
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2.
The change in the manganese content of cementite had no effect on the microhardness and is not accompanied by phase reconstruction.
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3.
The graphitization process during annealing of cast iron results from the dissociation of cementite directly, without formation of any intermediate carbide.
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Literature Cited
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Additional information
Kiev Polytechnical Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 10, pp. 7–10, October, 1971.
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Dunaeva, S.A., Permyakov, V.G. Changes in the properties and composition of cementite in the process of graphitization. Met Sci Heat Treat 13, 811–813 (1971). https://doi.org/10.1007/BF00713811
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DOI: https://doi.org/10.1007/BF00713811