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Alloys of the Fe-C-Mn system. Part 5. Special features of structure formation in white high-manganese irons

  • Structure Formation in Ferrous Alloys. Nonequilibrium Structures
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Metal Science and Heat Treatment Aims and scope

Abstract

Eutectic polyhedration of the diagram is presented and special features of structure formation in high-manganese irons are analyzed. It is shown that eutectics of two kinds (alloyed ledeburite and a eutectic based on M7C3 carbides), which are in peritectic equilibrium with the melt, can be formed and be accompanied by a special austenite-carbide component having a pearlite-like structure. The quasi-eutectic and the M7C3-bearing eutectic in heat-treated high-manganese irons have a special morphology with composite arrangement of carbides in austenite. It is shown that additional alloying of manganese irons with silicon might be a promising direction. Silicon stabilizes the M7C3 carbide in its competition with cementite and ensures the possibility of fabricating austenitic mottles with such carbide. Mottles alloyed with manganese and silicon and having globular graphite, M7C3 carbides and metastable austenitic matrix are characterized by high wear resistance, good antifriction properties, and a combination of high mechanical properties.

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References

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Authors and Affiliations

  1. Bryansk State Engineering-Technological Academy, Bryansk, Russia

    G. I. Sil’man

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  1. G. I. Sil’man
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 3, pp. 3–8, March, 2006.

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Sil’man, G.I. Alloys of the Fe-C-Mn system. Part 5. Special features of structure formation in white high-manganese irons. Met Sci Heat Treat 48, 95–103 (2006). https://doi.org/10.1007/s11041-006-0051-9

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  • DOI: https://doi.org/10.1007/s11041-006-0051-9

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