PSI - Issue 59

Pavlo Bulakh et al. / Procedia Structural Integrity 59 (2024) 253–258 Pavlo Bulakh / Structural Integrity Procedia 00 (2019) 000 – 000

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Fig. 4. Dependence of the relative value of the damage m μ av. of steel on the level of ε zp : (a) 10GN2MFA; (b) 15Kh2MFA; (c) 15Kh2NMFA.

4. Conclusions The obtained results make it possible to evaluate the relationship between the damage kinetics of the studied steels along two mutually perpendicular directions of deformation development at the same stress level under conditions of uniaxial tension. The results of the homogeneity assessment for the stage of loss of resistance to plastic deformation were obtained for heat-resistant steels. However, Lebedev and Chausov (2004) presented results that testify to the similarity of the process of accumulation of structural steel damage. Then it can be assumed that there is a similarity in the characteristic features of the change in the homogeneity of the metal at the final stage of the loss of resistance to plastic deformation of the vast majority of metals. However, this assumption certainly requires further experimental DSTU 7793-15, 2016. Materialy metalevi. Vyznachennia rivnia rozsiianykh poshkodzhen metodom LM-tverdosti. K.: DP Ukr. NDNTs. 16 s. Giginyak, F.F., Bulakh, P.A., Mozharovskaya, T.N., 2010. The kinetics of damage accumulation in heat-resistant steels under different loading conditions. Strength of materials 42, 90-95. Giginyak, F.F., Bulakh, P.A., 2012. Refinement of an elastic-viscoplastic model of deformation by taking into account the metal damage under cyclic loading. Strength of Materials 7, 388-394. Giginyak, F.F., Lebedev, A.O., Shkodzinskyi, O.K., 2003. Strength of Structural Materials under Low-Cycle Loading at a Complex Stress State. Kyiv: Naukova Dumka, pp. 270. (In Ukrainian). Lebedev, A.A., Marusii, O.I., Chausov, N.G., Zaitseva, L.V., 1982. Study of the fracture kinetics of ductile materials at the final stage of deformation. Strength of Materials 14, 13 – 19. Lebedev, A. A., Chausov, N.H., 2004. New Methods for the Evaluation of the Degradation of the Mechanical Properties of the Metal of Structures in the Process of Operation, Pisarenko Institute for Problems of Strength, Kiev, pp. 133. (In Russian). Marushchak, P.O., Chausov, M.G., Pylypenko, A.P., Zakiev, I.M., 2015. Experimental Assessment of Surface Damages in Statically Deformed Alloy D16chT. Strength of Materials 47, 602-609. Pisarenko, G.S., Rudenko, V.N., Tret’yachenko, G.N., Troshchenko, V.T., 1969. High -temperature Stress of Materials, Jerusalem, pp. 621. Pysarenko, H.S., Lebedev, A.A., 1976. Deformation and Strength of Materials at a Complex Stress State. Kiev, Naukova Dumka, 416 pp. (In Russian). Troshchenko, V.T., Khamaza, L.A., Pokrovsky, V.V., et al., 1993. Cyclic Deformation and Fatigue of Metals. Elsevier, Amsterdam, pp. 500. verification. References