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Effect of heat treatment on the resistance to crack propagation during cyclic loading of low-carbon steels

  • Strength Characteristics
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Metal Science and Heat Treatment Aims and scope

Conclusions

  1. 1.

    The fatigue strength (σf) of the low-carbon and low-alloy steels tested in the hot rolled condition differs negligibly. Quenching and tempering of ferritic-pearlitic steels has almost no effect on the fatigue strength.

  2. 2.

    Ferrite grain refining reduces the rate of crack growth. This is responsible for the difference in the rates of crack growth for different steels and the slower growth rate after quenching and tempering.

  3. 3.

    The maximum permissible range of the stress intensity coefficient during cyclic loading ΔKa is practically identical for the steels tested in both structural conditions.

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Literature cited

  1. W. F. Brown and J. E. Srawley, Plane Strain Crack Toughness Testing of High Strength Metallic Materials, ASTM, Philadelphia (1966).

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  2. P. Paris and G. Si "Analysis of stress around a crack," in: Applied Problems of Fracture Toughness [Russian translation], Mir, Moscow (1968), p. 82.

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  3. M. N. Georgiev et al., "Growth rate of fatigue cracks in side frames of the 2TÉ-116 locomotive," Probl. Prochn., No. 5, 46 (1977).

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  4. M. N. Georgiev et al., "Effect of astmmetry of the cycle on the rate of fatigue crack growth," Fiz.-Khim. Mekh. Mat., No. 2, 35 (1977).

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  5. S. E. Gurevich and L. D. Edidovich, "Rate of fatigue crack growth and threshold values of the stress intensity coefficient in the process of fatigue fracture," in: Fatigue and Fracture Toughness of Metals [in Russian], Nauka, Moscow (1974), p. 36.

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Authors
  1. M. N. Georgiev
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  2. V. N. Danilov
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  3. N. Ya. Mezhova
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  4. I. V. Nikitin
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  5. P. S. Sokolov
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Additional information

Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 10, pp. 25–29, October, 1978.

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Georgiev, M.N., Danilov, V.N., Mezhova, N.Y. et al. Effect of heat treatment on the resistance to crack propagation during cyclic loading of low-carbon steels. Met Sci Heat Treat 20, 811–815 (1978). https://doi.org/10.1007/BF00703777

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  • DOI: https://doi.org/10.1007/BF00703777

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