We study the fatigue life of springs made of manganese steel (0.66% С and 1.02% Mn) after four modes of heat treatment leading to the formation of troostite, martensitic–bainitic, and bainitic–martensitic structures. Springs are studied under the conditions of strain-controlled cyclic loading similar to the operating conditions of products intended for special applications. It is shown that the optimal durability of springs is guaranteed by the mixed structure of lower bainite and martensite obtained after isothermal quenching and special tempering performed by interrupting the process of cooling after quenching in the interval between the points corresponding to the onset and end of the martensitic transformation. The durability of springs is connected with the quantitative parameters of phase composition and dislocation structure and with the micromechanism of fracture of spring steels.
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References
A. G. Rakhshtadt, Spring Steels and Alloys [in Russian], Metallurgiya, Moscow (1982).
Y. Yamada, Materials for Springs, Springer, Berlin; Japan Society of Spring Engineers, Tokyo (2007).
K. K. Keshari, S. Kumar, A. Chatterjee, S. Ghosh, A. K. Bhakat, and B. Sarkar, “Development of Si−Mn alloyed spring steels suitable for elastic rail clip (ERC) application,” Int. J. Metal. Eng., 4, No. 1, 1−5 (2015).
V. I. Hrybovs’ka, R. V. Chepil,’ and O. P. Ostash, “Influence of decarburization on the durability of steels for rail accessories,” Fiz.-Khim. Mekh. Mater., 52, No. 3, 56−62 (2016); English translation: Mater. Sci., 52, No. 3, 357–364 (2016).
O. P. Ostash, R. V. Chepil,’ and V. I. Hrybovs’ka, “On the determining parameters of serviceability of elastic clamps of railway joints,” Fiz.-Khim. Mekh. Mater., 53, No. 1, 50−55 (2017); English translation: Mater. Sci., 53, No. 1, 55–61 (2017).
О. А. Haivorons’kyi, V. D. Poznyakov, L. I. Markashova, O. P. Ostash, V. V. Kulyk, T. A. Alekseenko, and O. S. Shyshkevych, “Structural and mechanical properties of the heat-affected zone of restored railway wheels,” Fiz.-Khim. Mekh. Mater., 51, No. 4, 114−119 (2015); English translation: Mater. Sci., 51, No. 4, 563–569 (2016).
O. P. Ostash, A. A. Gaivoronskii, V. D. Poznyakov, V. V. Kulyk, A Method for Thermal Treatment of Carbon Steels [in Ukrainian], Patent of Ukraine No. 105440, Publ. on 25.03.2016, Bull. No. 6.
L. I. Markashova, V. D. Poznyakov, A. A. Haivoronskii, E. N. Berdnikova, and T. A. Alekseenko, “Evaluation of the strength and crack resistance of the metal of railway wheels after long-term operation” Fiz.-Khim. Mekh. Mater., 47, No. 6, 73−79 (2011); English translation: Mater. Sci., 47, No. 6, 799–806 (2012).
L. I. Markashova, V. D. Poznyakov, E. N. Berdnikova, A. A. Haivoronskii, and T. A. Alekseenko, “Influence of structural factors on the mechanical properties and crack resistance of welded joints of metals, alloys, and composite materials,” Avtomat. Svarka, Nos. 6–7, 25–31 (2014).
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Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 53, No. 5, pp. 94–99, September–October, 2017.
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Ostash, О.P., Chepil’, R.V., Markashova, L.І. et al. Influence of the Modes of Heat Treatment on the Durability of Springs Made of 65G Steel. Mater Sci 53, 684–690 (2018). https://doi.org/10.1007/s11003-018-0124-0
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DOI: https://doi.org/10.1007/s11003-018-0124-0