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Effect of surface plastic deformation of fatigue crack initiation in a rotor steel

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Strength of Materials Aims and scope

Conclusions

  1. 1.

    The mean compressive cycle stresses increase the fatigue crack initiation resistance of the notchen specimens of the rotor steel.

  2. 2.

    The fatigue crack initiation resistance increases with the increase of the prior plastic strain; however, this resistance increases only to the cold working level corresponding to the ultimate strength of the metal.

  3. 3.

    The efficiency of hardening the rotor steel assessed on the basis of the increase of the stress intensity factor remains unchanged in the tests in hydrogen at a loading frequency of 25 Hz.

  4. 4.

    At a loading frequency of 25 Hz, electrolytic hydrogen has no effect on the cyclic cracking resistance (crack initiation resistance) of the rotor steel, both in the initial and hardened conditions.

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Literature Cited

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Authors
  1. I. V. Kudryavtsev
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  2. N. A. Shokov
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Additional information

All-Union Scientific-Research Institute of Electrical Engineering, Moscow. Central Scientific-Research Institute of Heavy Engineering, Leningrad. Translated from Problemy Prochnosti, No. 4, pp. 15–19, April, 1986.

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Kudryavtsev, I.V., Shokov, N.A. Effect of surface plastic deformation of fatigue crack initiation in a rotor steel. Strength Mater 18, 433–437 (1986). https://doi.org/10.1007/BF01524061

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  • DOI: https://doi.org/10.1007/BF01524061

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