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Relation of Changes in the Cementite Curie Temperature to Textural Strains in Steel

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

  1. Andrew, J. H., Lee, H., and Fang, B., J. Iron and Steel Inst., 165, Pt. 2, 160 (1950).

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  2. Antia, D. P., Fletcher, S. G., and Cohen, M., Trans. Amer. Soc. Metals, 32, 290 (1944).

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  3. Andrew, J. H., Lee, H., and Wilson, D. V., J. Iron and Steel Inst., 165, Pt. 4, 379 (1950).

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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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