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Verhandlungen pp 668-670 | Cite as

The precipitation of Cr7C3 in ferritic steels of varying chromium content

  • F. B. Pickering

Abstract

There has been much conflicting evidence on the formation of Cr7C3 during the tempering of chromium steels. Some workers (1, 2) have suggested that Cr7C3 is separately nucleated, whilst others (3, 4) support the view that Cr7C3 forms by an “in situ” transformation from Fe3C. The evidence presented in this paper has been obtained on both low alloy steels containing up to 4% chromium and high alloy 12% chromium steels, and has shown that the mode of formation of Cr7C3 is different at the two chromium levels.

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References

  1. 1.
    BALLUFFI, R. W., M. COHEN and B. L. AVERBACx: Trans. Amer. Soc. Metals 43, 497 (1951).Google Scholar
  2. 2.
    SEAL, A. K., and R. W. K. HONEYCOMBE: J. Iron Steel Inst. 188, 9 (1958).Google Scholar
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    Kuo, K.: J. Iron Steel Inst. 173, 363 (1953).Google Scholar
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    WEVER, F., u. W. KOCH: Stahl u. Eisen 74, (2), 989 (1954).Google Scholar
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    ANDREWS, K. W., and H. HUGHES: To be publishedGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1960

Authors and Affiliations

  • F. B. Pickering
    • 1
  1. 1.The United Steel Companies Ltd.Rotherham, YorksEngland

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