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A Study of Fatigue Crack Growth Rate in Steels in Relation to Crack-Tip Plastic Deformation and Fracture. Part 1. Test Methods and Results for 10GN2MFA Steel

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Strength of Materials Aims and scope

The methods for low-cycle fatigue testing and cyclic crack growth testing of 10GN2MFA steel at 20 and 270°C are described. Based on test results, fatigue crack growth rate curves are plotted and the characteristics of low-cycle plastic deformation and fracture are found. A difference in the kinetics of low-cycle plastic deformation is shown – the cyclic softening at 20°C and hardening at 270°C – which has an influence on fatigue life and fatigue crack growth resistance of this steel. The last-mentioned characteristic has been studied using two test methods: (i) with a decreasing stress intensity factor range and (ii) with a constant magnitude of load.

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Authors and Affiliations

  1. Pisarenko Institute of Problems of Strength, National Academy of Sciences of Ukraine, Kiev, Ukraine

    G. V. Tsybanev, A. P. Gopkalo, Yu. P. Kurash & A. I. Novikov

Authors
  1. G. V. Tsybanev
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  2. A. P. Gopkalo
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  3. Yu. P. Kurash
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  4. A. I. Novikov
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Corresponding author

Correspondence to G. V. Tsybanev.

Additional information

Translated from Problemy Prochnosti, No. 1, pp. 56 – 63, March – April, 2020.

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Tsybanev, G.V., Gopkalo, A.P., Kurash, Y.P. et al. A Study of Fatigue Crack Growth Rate in Steels in Relation to Crack-Tip Plastic Deformation and Fracture. Part 1. Test Methods and Results for 10GN2MFA Steel. Strength Mater 52, 228–234 (2020). https://doi.org/10.1007/s11223-020-00169-8

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  • DOI: https://doi.org/10.1007/s11223-020-00169-8

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