The transformation of iron carbide cementite was investigated on spheroidal graphite containing different contents of manganese. The isothermal maintain were carried out at 600, 650, 700, and 750°C for periods of up to one hour. It was observed that the kinetics of graphitization is slowed even more than cast iron rich in manganese.
Briki, J., & Ben Slima, S. (2012). Influence of Manganese Content on the Dissolution of the Iron Carbide Phase (Cementite) during a Graphitization Anneal of Spheroidal Graphite Cast Iron. Journal of Metallurgy, 2012, 1–4. https://doi.org/10.1155/2012/841901