Modelling of structure and properties of pearlitic steel and abrasive wear of the turnout frog in the cyclic loading conditions

• Autorzy: Herian J. , Aniołek K.
• Języki publikacji: EN

Abstrakty

EN

Purpose: Analysis of pearlite morphology changes as a result of hot rolling process and isothermal annealing. Design/methodology/approach: Physical modelling of isothermal annealing for a transition point of 520-620°C was carried out using a Gleeble simulator. A scanning electron microscope was used for a quantitative evaluation of the microstructure. In numerical estimations there were marked distributions of the loads and then distributions of the contact stresses and the strains in places of contact wheel-switch components. Tests of resistance to abrasive wear were carried out at the Amsler stand. Findings: The obtained test results confirm that these methods can be effectively used in shaping the pearlitic structure and properties of the steel. Practical implications: In physical modelling of tests of resistance to abrasive wear for the steel grade R260 after hot rolling and isothermal annealing it has been proved that this feature is a function of the steel structure and properties in the given operation conditions. The resistance to abrasive wear of steel R260 with a pearlitic structure and different pearlite morphology decreases with the increase of load and slide. From conducted numerical calculations result that the biggest dynamic load is in the moment of a drive of a wheel set on a frog of the turnout. The value of the vertical force depends on speed and mass of the railway vehicle. Originality/value: An advantageous pearlitic morphology of steel (block sections) with interlamellar distance in the order of 0.12-0.13 μm, ensuring hardness of about 340-350 HB, is facilitated by a hot rolling process combined with isothermal annealing.

Słowa kluczowe

EN

pearlite morphology; abrasive wear; railroad switches; block sections; load; contact stresses; numerical modelling

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2011
• Tom: Vol. 49, nr 1
• Strony: 71--81
• Opis fizyczny: Bibliogr. 19 poz., rys., tab.

Twórcy

autor

Herian J.

• Department of Materials Technology, Silesian University of Technology, ul. Krasińskiego 8, 40-019 Katowice, Poland

autor

Aniołek K.

• Institute of Materials Science, University of Silesia, ul. Bankowa 12, 40-007 Katowice, Poland

Bibliografia

• [1] K. Aniołek, J. Herian, The structure, properties and a resistance to abrasive wear of railway sections of steel with a different pearlite morphology, IOP Conf. Series, Materials Science and Engineering 22 (2011) 012012.
• [2] J. Herian, K. Aniołek, The structure and properties of steel with different pearlite morphology and its resistance to abrasive wear, Archives of Materials Science and Engineering 31/2 (2008) 83-86.
• [3] G. Donzella, M. Faccoli, A. Ghidini, A. Mazzu, R. Roberti, The competitive role of wear and RCF in a rail steel, Engineering Fracture Mechanics 72 (2005) 287-308.
• [4] L. Deters, M. Proksch, Friction and wear testing of rail and wheel material, Wear 258 (2005) 981-991.
• [5] Z. Stradomski, S. Stachura, Role of microstructure in the mechanism of abrasive wear of high-carbon cast steels, Acta Metallurgica Slovaca R.8 2/2/2 (2002) 388-393.
• [6] O.P. Modi, D.P. Mondal, B.K. Prasad, M. Singh, H.K. Khaira, Abrasive wear behaviour of a high carbon steel: effects of microstructure and experimental parameters and correlation with mechanical properties, Materials Science and Engineering A 343 (2003) 235-242.
• [7] M.G.M. da F. Gomes, L.H. de Almeida, L.C.F.C. Gomes, I. Le May, Effects of microstructural parameters on the mechanical properties of eutectoid rail steels, Materials Characterization 39 (1997) 1-14.
• [8] F.G. Caballero, C. Capdevila, C.G. de Andres, Modeling of the interlamellar spacing of isothermally formed pearlite in a eutectoid steel, Scripta Materialia 42 (2000) 537-542.
• [9] F.G. Caballero, C.G. de Andres, C. Capdevila, Characterization and morphological analysis of pearlite in a eutectoid steel, Materials Characterization 45 (2000) 111-116.
• [10] V.T.L. Buono, B.M. Gonzalez, T.M. Lima, M.S. Andrade, Measurement of fine pearlite interlamellar spacing by atomic force microscopy, Journal of Materials Science 32 (1997) 1005-1008.
• [11] R. Kuziak, M. Głowacki, M. Pietrzyk, Modelling of plastic flow, heat transfer and microstructural evolution during rolling of eutectoid steel rods, Journal of Materials Processing Technology 60 (1996) 589-596.
• [12] S. Zakharov, I. Zharov, Simulation of mutual wheel/rail wear, Wear 253 (2002) 100-106.
• [13] V.M. Schastlivtsev, T.I. Tabatchikova, A.V. Makarov, L.Yu. Egorova, I.L. Yakovleva, Wear resistance of carbon steel with a structure of thin-plate pearlite, Metal Science and Heat Treatment 43/1-2 (2001) 30-33.
• [14] D. Pogorelov, Computer-aided modeling railroad vehicle dynamics, Proceedings of the International Congress “Mechanics and Tribology of Transport Systems” Mechtribotrans 2003, Rostov on-Don, Book 2, 171-176.
• [15] D.Y. Pogorelov, Simulation of rail vehicle dynamics with universal mechanism software, Rail vehicle dynamics and associated problems, Silesian University of Technology, Gliwice, 2005, 13-58.
• [16] M. Polok-Rubiniec, L.A. Dobrzański, M. Adamiak, Comparison of the adhesion and wear resistance of the PVD coatings, Journal of Achievements in Materials and Manufacturing Engineering 20 (2007) 279-282.
• [17] L.A. Dobrzański, D. Pakuła, Structure and properties of the wear resistant coatings obtained in the PVD and CVD processes on tool ceramics, Materials Engineering 3 (2004) 568-571.
• [18] M. Sitarz, A. Sładkowski, Z. Żurek, Research of influence of surface profiles for different wheel - rail pair on distribution of contact stresses, Proceedings of the 6th International Conference “Contact mechanics and Wear of Rail/Wheel Systems” CHARMEC, Gothenburg, 2003, 259-264.
• [19] M. Sitarz, T. Wojdyła, M. Witaszek, The forces and contact stresses in wheel - rail system, Proceedings of the International Conference “Mechanika”, Kowno, 1999, 230-235.