Metal Science and Heat Treatment of Metals

, Volume 2, Issue 6, pp 345–347 | Cite as

Brittle fractures in austenitic steel parts

  • E. I. Uryupina
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Conclusions

  1. 1.

    With the temperature increasing to 800°C, the yield strength value of solutionized austenitic steel (with a homogeneous, non-equilibrium structure) falls to almost one-half and the elongation to one-third of the respective room temperature figures.

     
  2. 2.

    Formation of secondary phases during aging (service) reduces the ductility of the steel both at room and at elevated temperatures.

     
  3. 3.

    Incomplete removal of cold work induced by cold rolling results in a drastic loss of ductility at elevated temperatures.

     
  4. 4.

    Work hardening due to forming operations, for instance, cold bending, lowers the ductility of austenitic steel at high temperatures the more, the heavier the deformation.

     
  5. 5.

    Brittle failures (without creep) of austenitic steels in service are attributable to the combined action of the aforementioned factors, especially one that is extraordinarily strong.

     

Keywords

Brittle Ductility Yield Strength Elevated Temperature Cold Work 

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References

  1. 1.
    I. V. Kudryavsev, Increase of Fatigure Strength in Steel and Cast Iron Parts by Means of Surface Work Hardening, (Povyshenie Ustalostnoi Proch. Stal. i Chug. Det. Poverkhn. Uprochn) [Book] Mashgiz Press, 1955.Google Scholar
  2. 2.
    N. D. Sazonova,Metalloved. i Obrab. Met., 1958, No. 9, 46–48, [Available as HB Translation No. 4358].Google Scholar
  3. 3.
    I. I. Trunin, Effect of Strain Hardening on Properties of Heat Resistant Steels (Vliyanie Naklepa na Svoistva Zharopr. St.) [Book] TsBNTI Press, 1957.Google Scholar

Copyright information

© Acta Metallurgica 1962

Authors and Affiliations

  • E. I. Uryupina

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