Metal Science and Heat Treatment

, Volume 6, Issue 10, pp 630–632 | Cite as

Microstructure of martensite in chromium-nickel steel

  • V. B. Spiridonov
  • Yu. A. Skakov
  • V. N. Iordanskii
Steels and Alloys for the Chemical Industry
  • 47 Downloads

Conclusions

The structure of the martensite in steel of the transition type depends on the conditions under which it was produced: when martensite results from treatment at −70°C there is a predominance of plate-like crystals containing twins. Cooling from high temperature tempering, leads to the formation of needle-like crystals alone without any sign of internal twinning.

The ultimate strength and the yield strength of martensite formed as the result of treatment at −70° are higher.

Stacking defects may be areas of preferential nucleation of martensite crystals and at the same time limit the growth of martensite crystals.

Keywords

Microstructure Martensite Yield Strength Time Limit Ultimate Strength 

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Literature Cited

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    A. P. Gulyaev and E. V. Petunina Metallographic Investigation of the Transformation of Austenite into Martensite [in Russian], Trudy TsNIITMASh, Book 47, Moscow, Mashgiz (1952).Google Scholar
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    P. Kelly and J. Nutting, “Journal Iron and Steel Institute”,199, No. 3 (1961).Google Scholar
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    W. Pitsch, “Acta metallurgica”,10, No. 9 (1962).Google Scholar
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    V. B. Spiridonov, Yu. A. Skalov, and V. N. Iordanskii, Zavodskaya laboratoriya, No. 8 (1963).Google Scholar
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    J. Venables, “Philosophical magazina”,7, No. 73 (1962).Google Scholar

Copyright information

© International Journal of the Science of Metals, Inc. 1964

Authors and Affiliations

  • V. B. Spiridonov
    • 1
  • Yu. A. Skakov
    • 1
  • V. N. Iordanskii
    • 1
  1. 1.Moscow Institute of Steels and AlloysMoscowUSSR

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