Metal Science and Heat Treatment of Metals

, Volume 1, Issue 1, pp 53–58 | Cite as

Susceptibility of stainless steels to intergranular corrosion after heat treating

  • A. P. Akshentseva
Heat Treating of Metals
  • 43 Downloads

Conclusions

  1. 1.

    Thermal etching reveals the structure of austenitic stainless Cr-Ni-Mo-Ti-Cu steels. Industrial heats of steels A and B (Table 1) contain unstable austenite; 2–5 minutes' heating at 600–850°C (1110–1560°F) precipitates finely dispersed Cr-Mo carbide particles at the grain boundaries and the steel becomes susceptible to IG corrosion.

     
  2. 2.

    Steel C, Table 1, contains stable austenite, not undergoing grain growth nor precipitating carbide at grain boundaries on short-period heating in an arc (critical time: 10 minutes). The steel is therefore resistant to IG corrosion.

     
  3. 3.

    Aging of steels A and C for 50–100 hours at 800–950°C (1470–1740°F) precipitates high-chromium sigma phase inside the grains and at their boundaries.

     

Keywords

Carbide Stainless Steel Austenite Critical Time Sigma Phase 

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References

  1. 1.
    A. P. Akshentseva, TRUDY Research Institute for Chemical Engineering Equipment, Book 23, 1957.Google Scholar
  2. 2.
    Yu. I. Kazennov and L. P. Kolosova, AVTOMATICHESKAYA SVARKA, vol. 10, 1957,(2), 11–21.Google Scholar
  3. 3.
    G. V. Akimov, V. V. Andreeva and S. A. Gintsberg, TRUDY Inst. Phys. Chem. USSR Acad. Sci., Series V, Studies on Metal Corrosion, No. 4. Published by the Academy, 1955.Google Scholar
  4. 4.
    G. V. Akimov, V. V. Andreeva and T. P. Stepanova, Studies on Stainless Steels, Published by USSR Academy of Sciences, 1956.Google Scholar
  5. 5.
    N. A. Peshetkina and N. I. Lebedyanskaya, Collected Papers from the Central Mechanical Engineering Research Institute, Book 59, Physico Chemical Methods of Studying Metals, Mashgiz, 1953.Google Scholar
  6. 6.
    E. E. Levin, Microscopic Study of Metals, Mashgiz, 1955.Google Scholar
  7. 7.
    E. M. Blumberg and V. P. Dubinskii, et al., ZAV. LAB., vol. 18, 1952 (5).Google Scholar
  8. 8.
    V. E. Neimark and I. B. Piletskaya, Collected Papers from the Central Ferrous-Metallurgy Research Institute, Problems of Metal Science and Physics, Metallurgizdat, 1951.Google Scholar
  9. 9.
    H. Thielsch, WELDING JOURNAL, vol. 29, 1950, (12), 577s-621s.Google Scholar
  10. 10.
    G. V. Smith, J. E. Dulis, H. S. Link, Ibid., vol. 30, 1951, (8), 385s-396s.Google Scholar

Copyright information

© Henry Brutcher 1959

Authors and Affiliations

  • A. P. Akshentseva
    • 1
  1. 1.Research Institute for Chemical Engineering EquipmentUSSR

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