Metal Science and Heat Treatment

, Volume 13, Issue 10, pp 827–832 | Cite as

Hardening the surface of austenitic steels by strain hardening

  • D. V. Lebedev
  • B. M. Ovsyannikov
Steels and Alloys for Cryogenic Technology
  • 16 Downloads

Conclusions

  1. 1.

    The carrying capacity in terms of permissible stress (σ0, 2) of steels Kh18N10T and Kh21N5AG7 under conditions of uniaxial static tension increases 50% down to −253° as the result of surface hardening.

     
  2. 2.

    For hardened steels Kh18N10T and Kh21N5AG7 σ b n n > 1 and σ b n 0.2 > 1 with Kt=3.0 in the range of 20 to −253° C.

     
  3. 3.

    With static loading and bulk stress conditions (notch root radius 0.25 mm) steel Kh18N10T can be used down to −253° C and steel Kh21N5AG7 down to −196° C in the hardened condition.

     
  4. 4.

    Under dynamic bending conditions steels Kh18N10T and Kh21N5AG7 can be used in the hardened condition down to −253° C in the presence of a stress concentrator (Kt=3.4).

     

Keywords

Stress Condition Static Loading Strain Hardening Austenitic Steel Stress Concentrator 

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Literature cited

  1. 1.
    D. V. Lebedev and B. M. Ovsyannikov, Metal, i Term. Obrabotka Metal., No. 9 (1971).Google Scholar
  2. 2.
    D. V. Lebedev, Metal. i Term. Obrabotka Metal., No. 3 (1971).Google Scholar
  3. 3.
    H. Neuber. Stress Concentrations [Russian translation], ONTI (1947).Google Scholar

Copyright information

© Consultants Bureau 1972

Authors and Affiliations

  • D. V. Lebedev
  • B. M. Ovsyannikov

There are no affiliations available

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