The joint effect of vanadium and nitrogen on the mechanical behavior of railroad wheels steel

• Autorzy: Kulyk V. V. , Shipitsyn S. Ya. , Ostash O. P. , Duriagina Z. A. , Vira V. V.

Identyfikatory

DOI

10.5604/01.3001.0012.7109

• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of the proposed research is to investigate the regularities of the microstructure change, fracture micromechanism and mechanical service characteristics of the high-strength wheel steel with a lowered carbon content under static, impact and cyclic loading depending on the total content of vanadium and nitrogen and also the steel heat treatment modes. Design/methodology/approach: Alloying with vanadium was carried out in the range of 0.09-0.23% and nitrogen in the range of 0.006-0.018%. All steels were heat treated by normalizing and subsequent tempering at different temperatures in the range of 450-650°C. Steels microstructure was investigated by the optical metallography methods on the microscope EPITIP-2 (Carl Zeiss Jena). Scanning electron microscope Zeiss-EVO40XVP was also used for microstructural and microfractography investigations. Static strength (UTS), relative elongation (TEL), impact toughness tests (KCV) and fatigue crack growth resistance characteristics (fatigue threshold ΔKth, cyclic fatigue fracture toughness ΔKfc) were determined on standard specimens. Rolling contact fatigue testing was carried out on the model specimens. Findings: The regularities of the change of microstructure, fracture micromechanism and mechanical characteristics of the high-strength wheel steel with a lowered carbon content under static, impact and cyclic loading depending on the total content of vanadium and nitrogen and also the steel heat treatment modes are studied. Research limitations/implications: The results obtained on laboratory samples should be tested during a real railway wheels investigation. Practical implications: The steel with the optimal parameter [V∙N]∙104 = 22.1% provides high tread surface damaging resistance established on the model wheels. Originality/value: It was established that after normalization at 950°C and tempering at 550°C the increase of ultimate strength UTS and cyclic fracture toughness ΔKfc by 4% and 19%, respectively; impact toughness at room (KCV+20) and low temperature (KCV-40) in 1.5 and 3.3 times, respectively, when parameter [V∙N]∙104 changes from 7.8 to 22.1% and carbon content from 0.63 to 0.57%.

Słowa kluczowe

EN

railway wheel steel; microalloying; heat treatment; microstructure; mechanical characteristics

PL

mikrostopowanie; obróbka cieplna; mikrostruktura; właściwości mechaniczne

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2018
• Tom: Vol. 89, nr 2
• Strony: 56--63
• Opis fizyczny: Bibliogr. 15 poz., rys., tab.

Twórcy

autor

Kulyk V. V.

• Lviv Polytechnic National University, 12 Bandera St., Lviv, 79013, Ukraine

autor

Shipitsyn S. Ya.

• Physico-Technological Institute of Metals and Alloys of the National Academy of Sciences of Ukraine, 34/1 Acad. Vernadskoho Ave., Kyiv 03680, Ukraine

autor

Ostash O. P.

• Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine, 5 Naukova St., Lviv 79060, Ukraine

autor

Duriagina Z. A.

• Lviv Polytechnic National University, 12 Bandera St., Lviv, 79013, Ukraine
• Lviv Polytechnic National University, Lviv, Ukraine; The John Paul II Catholic University of Lublin, Lublin, Poland

autor

Vira V. V.

• Lviv Polytechnic National University, 12 Bandera St., Lviv, 79013, Ukraine

Bibliografia

• [1] O.P. Ostach, V.H. Anofriev, I.M. Andreiko, L.A. Muradyan, V.V. Kulyk, On the concept of selection of steels for high-strength railroad wheels, Materials Science 48/6 (2013) 697-703, doi: https://doi.org/10.1007/s11003-03-9557-7.
• [2] DSTU GOST 10791-2016, All-rolled wheels. Specifications: M.: Standardinform, 2016, (in Russian).
• [3] EN 13262:2004+A2:2011, Railway applications. Wheelsets and bogies. Wheels, Product requirements: BSI, 2011.
• [4] Specifications: M-107/M-208-2011, AAR Manual of Standards and Recommended Practices Wheels and Axles. Wheels, Carbon Steel, 2011.
• [5] H.M. Tournay, J.M. Mulder, The transition from the wear to the stress regime, Wear 191/1-2 (1996) 107-112. doi: https:/doi.org/10.1016/0043-1648(95)06693-4.
• [6] P.D. Cassidy, Wrought materials may prolong wheel life, International Railway Journal and Rapid Transit Review 41/12 (2001) 40-41.
• [7] I. Poschmann, C. Heermant, Werkstoffe fur rollendes Bahnmaterial. Gefuge und Mechanische Eigenschaften, Eisenbahningenieur 53/8 (2002) 47-51 (in German).
• [8] B.S. Ivanov, G.A. Filippov, K.Yu. Demin, K.A. Moskovoi, A.E. Semin, Modiying wheel steel with nitrogen, Steel in Translation 37/9 (2007) 769-772, doi: https://doi.org/10.3103/S0967091207090112.
• [9] S.Ya. Shipitsyn, Yu.Z. Babskin, I.F. Kirchu, L.G. Smolyakova, N.Ya. Zolotar, Microalloyed steel for railroad wheels, Steel in Translation 38/9 (2008) 782-785, doi: https://doi.org/10.3103/S0967091208090222.
• [10] F. Zhao, M. Wu, B. Jiang, C. Zhang, J. Xie, Y. Liu, Effect of nitrogen contents on the microstructure and mechanical properties of V-Ti microalloyed steels for the forging of crankshafts, Materials Science and Engineering A 731 (2018) 360-368, doi: https://doi.org/10.1016/j.msea.2018.06.070
• [11] J. Hu, L.-X. Du, J.-J. Wang, C.-R. Gao, Effect of welding heat input on microstructures and toughness in simulated CGHAZ of V-N high strength steel, Materials Science and Engineering A 577 (2013) 161-168, doi: https://doi.org/10.1016/j.msea.2013.04.044.
• [12] Yu.Z. Babskin, S.Ya. Shipitsyn, Microalloying of structural steel with nitride-forming elements, Steel in Translation 39/12 (2009) 1119-1121, doi: https://doi.org/10.3103/S0967091209120201.
• [13] ASTM Standard E647-99, Test Method for Measurement of Fatigue Crack Growth Rates, 1999.
• [14] O.P. Ostash, V.V. Kulyk, T.M. Lenkovskiy, Z.A Duriaginna, V.V. Vira, T.L. Tepla, Relationships between the fatigue crack growth resistance characteristics of a steel and the tread surface damage of railway wheel, Archives of Materials Science and Engineering 90/2 (2018) 49-55. doi: 10.5604/01.3001.0012.0662.
• [15] O.P. Ostash, O.A. Haivoronskyi, V.D. Pozniakov, V.V. Kulyk, Method for heat treatment of high-strength low-alloyed carbon steels, The patent of Ukraine No. 105440, 6, 2016, 4 (in Ukrainian).

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).