PSI - Issue 39

Nina Selyutina et al. / Procedia Structural Integrity 39 (2022) 157–160 Author name / Structural Integrity Procedia 00 (2019) 000–000

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4. Conclusions Low-cycle fatigue tests for steel effects in rigid loading were examined. Strain amplitude and strain rate effects on the stable cycle at low-cycle deformation for steel C45E were experimentally studied. The stabilisation effect of the hysteresis loop for steel C45E with varying durations of cycles was revealed in the selected loading regimes. Finally, the duration of the stability of the hysteresis strain width decreases with increasing amplitude. Acknowledgements The study was supported by the RF President Grant for Young Scientists МК -78.2021.1.1 and by RFBR, projects number 21-51-53008 and 20-01-00291. References Luo, Y.A. 2012. Cyclic softening plastic model of carbon steel 45 under uniaxial cyclic straining. Advanced Materials Research. 343-344, 85–91. Makarov, A.V., Savrai, R.A., Gorkunov, E.S., Yurovskikh, A.S., Malygina, I.Yu, Davydova, N.A., 2015. Structure, mechanical characteristics, and deformation and fracture peculiarities of quenched structural steel under cyclic loading after combined strain -heat nanostructuring treatment. Physical mesomechanics. 18 (1), 43–57. Moćko , W., Brodecki, A., and Kruszka, L., 2016. Mechanical Response of Dual Phase Steel at Quasi-Static and Dynamic Tensile Loadings after Initial Fatigue Loading, Mechanics of Materials, 92, 18–27. Selyutina, N.S., Petrov, Y.V. 2020. Effect of plastic strain stabilization under low-cycle deformation. Physical Mesomechanics 23,384–389. Selyutina, N.S., Smirnov, I.V., Petrov, Yu.V. 2021. Stabilisation effect of strain hysteresis loop for steel 45. 145, 106133. Yang, X., 2005. Low cycle fatigue and cyclic stress ratcheting failure behavior carbon steel 45 under uniaxial cyclic loading. International Journal of Fatigue 27, 1124–1132. Gu, T., Zhang, S., Zhao, Y., Yang, Y., Liu, H., Wu, L., Liu, J., Hou, H. 2021. Novel method to improve the microstructure and mechanical properties of 45 steel. Metals and Materials International. In press. doi: 10.1007/s12540-020-00960-x