Abstract
Andrew, Lee and Fang1 have shown that, when a carbon steel is plastically deformed, changes occur in the apparent cementite Curie temperature. The characteristics of the modified magnetic saturation intensity/temperature relationship (curve 2 in the graph) resemble those observed in the case of heat-treated carbon steels: in the latter case, this behaviour has been ascribed to the initial precipitation of a carbide having a structure different from cementite2. In an X-ray crystallographic examination of severely deformed high-carbon steels3, we found no evidence of a new carbide phase, but noted that the textural stress system, set up between ferrite and cementite as a result of cold working, imposed high strains on the cementite particles.
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References
Andrew, J. H., Lee, H., and Fang, B., J. Iron and Steel Inst., 165, Pt. 2, 160 (1950).
Antia, D. P., Fletcher, S. G., and Cohen, M., Trans. Amer. Soc. Metals, 32, 290 (1944).
Andrew, J. H., Lee, H., and Wilson, D. V., J. Iron and Steel Inst., 165, Pt. 4, 379 (1950).
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Cottrell, A. H., Report of Conference on Strength of Solids, Physical Society, 30 (1948).
Snoek, J. L., Physica, 8, 711 and 734 (1941).
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WILSON, D. Relation of Changes in the Cementite Curie Temperature to Textural Strains in Steel. Nature 167, 899–900 (1951). https://doi.org/10.1038/167899b0
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DOI: https://doi.org/10.1038/167899b0
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