INFLUENCE OF PRELIMINARY HIGH-SPEED PLASTIC DEFORMATION ON BRITTLE FRACTURE RESISTANCE OF FERRITIC-PEARLITE STEELS
DOI:
https://doi.org/10.15407/dopovidi2026.04.056Keywords:
high-speed deformation, ferritic-pearlite steel, operational degradation, impact toughness, mechanical propertiesAbstract
In the presented study, a scientific and technical problem of loss of serviceability in ferritic-pearlite structural steels due to the action of extreme high-speed plastic deformation, accompanied by a decrease in their resistance to brittle fracture has been formulated. Using the example of a portal crane made of ferritic-pearlite sheet steel and operated for 51 years in a seaport, it has been established that extremely high-speed deformation of ferritic-pearlite steels of long-term operated metal structures have an ambiguous effect on their mechanical properties. Thus, the strength properties of steel generally decrease, which is consistent with the assertion that such changes are caused by the development of dissipated microdamage. At the same time, it has been revealed that, depending on the loading conditions and the orientation of the specimens relative to the texture, high-speed deformation can lead both to a decrease in the impact toughness, as well as to an increase in it due to a change in the crack propagation path caused by metal delamination along the rolling direction, which was confirmed by macrofractographic analysis of the tested specimens. Therefore, considering the potential ambiguity of the effect of deformation under extreme conditions on the properties of steels, it is recommended to determine a set of mechanical properties (strength, ductility, and impact toughness) to decide whether structures subjected to high-speed deformations can continue to be used. Future research will focus on developing non-destructive testing methods to assess the technical condition of steels that have undergone preliminary plastic deformation at high strain rates by establishing correlations between resistance to brittle fracture and informative non-destructive parameters, with the aim of improving the assessment of the operational safety of metal structures.
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Kulka, J., Mantic, M., Fedorko, G. & Molnar, V. (2016). Analysis of crane track degradation due to operation. Eng. Fail. Anal., 59, pp. 384-395. https://doi.org/10.1016/j.engfailanal.2015.11.009
Marquez, A. A., Venturino, P. & Otegui, J. L. (2014). Common root causes in recent failures of cranes. Eng. Fail. Anal., 39, pp. 55-64. https://doi.org/10.1016/j.engfailanal.2014.01.012
Nemchuk, O. O. & Nesterov, O. A. (2020). In-service brittle fracture resistance degradation of steel in a ship-to-shore portal crane. Strength Mater., 52, No. 2, pp. 275-280. https://doi.org/10.1007/s11223-020-00175-w
Pustovyi, V. M., Semenov, P. O., Nemchuk, О. O., Hredil, M. I., Nesterov, О. A. & Strelbitskyi, V. V. (2022). Degradation of steels of the reloading equipment operating beyond its designed service life. Mater. Sci., 57, No. 5, pp. 640-648. https://doi.org/10.1007/s11003-022-00590-1
Dzioba, I., Zvirko, O., Pała, R. & Oliynyk, O. (2024). Assessment of the structural integrity of the portal crane elements after long-term operation. Materials, 17, No. 24, 6133. https://doi.org/10.3390/ma17246133
Omura, T., Kudo, T. & Fujimoto, S. (2006). Environmental factors affecting hydrogen entry into high strength steel due to atmospheric corrosion. Mater. Trans., 47, No. 12, рр. 2956-2962. https://doi.org/10.2320/matertrans.47.2956
Zhang, F., Wang, X., Teng, R., Guo, X. & Wang, Y. (2023). Study on stress intensity factor of the pit-crack model for portal crane girders. Sustainability, 15, No. 9, 7621. https://doi.org/10.3390/su15097621
Peng, Z., Bao, Z. R., Dan, W. J. & Wang, X. Y. (2025). Study on the early corrosion behavior and mechanical properties of low-carbon steel in a simulated seawater environment. Strength Mater., 57, No. 1, 113372, pp. 131-144. https://doi.org/10.1007/s11223-025-00752-x
Nykyforchyn, H., Zvirko, O., Oliynyk, O., Venhryniuk, O., Nesterov, O. & Tsyrulnyk, O. (2023). In-service degradation of rolled carbon steels: the role of damaging. Procedia Struct. Integr., 47, pp. 190-194. https://doi.org/10.1016/j.prostr.2023.07.011
Semenov, P. O. (2025). The influence of extreme deformation conditions on the impact toughness of the exploited steel of the portal crane. Mater. Sci., 60, pp. 607-613. https://doi.org/10.1007/s11003-025-00926-7
Dyadin, V. P., Davydov, Ye. O. & Dmytrienko, R. I. (2021). Influence of deformations from static loads on impact and fracture toughness of cylindrical shells. Autom. Weld., No. 9, рр. 24-30. (in Ukrainian) https://doi.org/10.37434/as2021.09.04
Nazarchuk, Z., Muravsky, L. & Kuryliak, D. (2023). Digital speckle pattern interferometry for studying surface deformation and fracture of materials. In: Optical metrology and optoacoustics in nondestructive evaluation of materials. Springer Series in Optical Sciences, Vol. 242 (pp. 149-217). Singapore: Springer. https://doi.org/10.1007/978-981-99-1226-1_4
Juraszek, J. (2019). Residual magnetic field non-destructive testing of gantry cranes. Materials, 12, No. 4, 564. https://doi.org/10.3390/ma12040564
De Arriba López, V., Maboudi, M., Achanccaray, P. & Gerke, M. (2024). Automatic non-destructive UAV-based structural health monitoring of steel container cranes. Appl. Geomat., 16, No. 1, pp. 125-145. https://doi.org/10.1007/s12518-023-00542-7
Nemchuk, O. O. & Zvirko, O. I. (2020). Electrochemical method for the diagnostics of degradation of steels of marine portal cranes. Mater. Sci., 56, No. 3, pp. 410-416. https://doi.org/10.1007/s11003-020-00444-8
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