The influence of the distribution of nonmetalic inclusion on the fatigue strength coefficient of high purity steels

• Autorzy: Lipiński T.
• Języki publikacji: EN

Abstrakty

EN

Purpose: In this study, attempts were made to analyze the impact of impurities with various diameters and spacing between non-metalic inclusion λ on fatigue strength coefficient k determined under rotary bending fatigue conditions zgo of high purity steels produced in an industrial plant. Design/methodology/approach: The study was performed on 21 heats produced in an industrial plant. Fourteen heats were produced in 140 ton electric furnaces, and 7 heats were performed in a 100 ton oxygen converter. The experimental variants were compared in view of the applied melting technology and heat treatment options. The results were presented to account for the correlations between the fatigue strength coefficient during rotary bending, the diameter of and spacing between submicroscopic impurities. Findings: Equations for calculating the fatigue strength coefficient at each tempering temperature and a general equation for all tempering temperatures were proposed. Equations for estimating the fatigue strength coefficient based on the relative volume of submicroscopic non-metallic inclusions were also presented. The relationship between the fatigue strength and hardness of high-grade steel vs. the quotient of the diameter of impurities and the spacing between impurities, and the fatigue strength and hardness of steel vs. the relative volume of non-metallic impurities were determined. Practical implications: The proposed linear regression equations supported the determination of fatigue strength coefficient k and bending fatigue strength as a function of hardness taking into account impurities. Originality/value: The proposed equations contributes to the existing knowledge base of practices impact of impurities with various diameters and spacing between non-metalic inclusion on fatigue strength.

Słowa kluczowe

EN

metallic alloys; fatigue; mechanical; heat treatment

PL

stopy metali; zmęczenie; mechaniczny; obróbka cieplna

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2015
• Tom: Vol. 69, nr 1
• Strony: 18--25
• Opis fizyczny: Bibliogr. 28 poz., rys., tab.

Twórcy

autor

Lipiński T.

• University of Warmia and Mazury in Olsztyn, Faculty of Technical Sciences, ul. Oczapowskiego 11, 10-957 Olsztyn, Poland

Bibliografia

• [1] S. Kocańda, Fatigue failure of metals. WNT Warsaw 1985 (in Polish).
• [2] D. Spriestersbach, P. Grad, E. Kerscher, Influence of different non-metallic inclusion types on the crack initiation in high-strength steels in the VHCF regime, International Journal of Fatigue 64 (2014) 114-120.
• [3] S. Beretta, Y. Murakami, Largest-Extreme-Value distribution analysis of multiple inclusion types in determining steel cleanliness, Metallurgical and Materials Transactions 32B (2001) 517-523.
• [4] J. Kloch, B. Billia, T. Okane, T. Umeda, W. Wołczyński, Experimental verification of the solute redistribution in cellular/dendritic solidification of the Al-3.5Li and Fe-4.34Ni Alloys, Materials Science Forum 329/330 (2000) 31-36.
• [5] T. Himemiya, W. Wołczyski, Prediction of solidification path and solute redistribution of an ironbased multi-component alloy considering solute diffusion in the solid, Materials Transactions of the Japan Institute of Metals 43 (2002) 2890-2896.
• [6] W. Wołczyński, E. Guzik, B. Kania, W. Wajda, interplay between temperature gradients field and c-e transformation in solidifying rolls, Archives of Foundry Engineering 9 (2009) 254.
• [7] G.N. Kasatkin, Effect of nonmetallic inclusions on the mechanical properties of hydrogenated steels, Materials Science 40/6 (2004) 850-855.
• [8] M. Faryna, W. Wołczyński, T. Okane, Microanalytical techniques applied to phase identification and measurement of solute redistribution at the solid/liquid interface of frozen Fe-4.3Ni doublets, Mikrochimica Acta, 139 (2002) 61-65.
• [9] C.W. Anderson, G. Shi, H.V. Atkinson, C.M. Sellars, The precision of methods using the statistics of extremes for the estimation of the maximum size of inclusions in clean steels, Acta Materialia 48/17 (2000) 4235-4246.
• [10] T. Lipiński, A. Wach, Influence of Outside Furnace Treatment on Purity Medium Carbon Steel. Proceedings of the 23rd International Conference on Metallurgy and Materials METAL 2014. TANGER Ltd., Ostrava, 2014, 738-743.
• [11] L.A. Dobrzański, Heat treatment as the fundamental technological process of formation of structure and properties of the metallic engineering materials, Proceedings of the 8th Seminar of the International Federation for Heat Treatment and Surface Engineering IFHTSE, Dubrovnik-Cavtat, Croatia, 2001, 1-12.
• [12] T. Lipiński, A. Wach, Dimensional structure of nonmetallic inclusions in high-grade medium carbon steel melted in an electric furnace and subjected to desulfurization, Solid State Phenomena 223 (2015) 46-53.
• [13] T. Lipiński, A. Wach, The effect of the production process and heat processing parameters on the fatigue strength of high-grade medium-carbon steel, Archives of Foundry Engineering 12/2 (2012) 55-60.
• [14] L.A. Dobrzański, Synergic effects of the scientific cooperation in the field of materials and manufacturing engineering, Journal of Achievements in Materials and Manufacturing Engineering 15/1-2 (2006) 9-20.
• [15] D. Podorska, P. Drożdż, J. Falkus, J. Wypartowicz, Calculations of oxide inclusions composition in the steel deoxidized with Mn, Si and Ti, European Materials Research Society, Warsaw University of Technology, 2006.
• [16] W. Wołczyński, Back-Diffusion Phenomenon during the Crystal Growth by the Bridgman Method, Chapter 2, in: Modelling of Transport Phenomena in Crystal Growth, WIT Press, Southampton-Boston, 2000, 19-59.
• [17] J.M. Zhanga, J.F Zhanga., Z.G. Yanga, G.Y. Lia, G. Yaoa, S.X. Lia, W.J. Huic, Y.Q. Weng, Estimation of maximum inclusion size and fatigue strength in highstrength ADF1 steel, Materials Science and Engineering A 394 (2005) 126-131.
• [18] T. Cornelius, K. Birger, I. Nils-Gunnar, Fatigue anisotropy in cross-rolled, hardened medium carbon steel resulting from MnS inclusions, Metallurgical and Materials Transactions 37A (2006) 2995-3007.
• [19] Y. Hai-Liang, L. Xiang-Hua, B. Hong-Yun, Ch. LiQing, J Deformation behavior of inclusions in stainless steel strips during multi-pass cold rolling, Journal of Materials Processing Technology 209 (2009) 455-461.
• [20] Y. Murakami, Metal fatigue: Effects of small defects and inclusions, Amsterdam Elsevier, 2002.
• [21] T. Lipiński, A. Wach, The effect of fine non-metallic inclusions on the fatigue strength of structural steel, Archives of Metallurgy and Materials 60/1 (2015) 65-69.
• [22] Yu-Nan Wang, Jian Yang, Yan-Ping Bao, Effects of non-metallic inclusions on machinability of freecutting steels investigated by nano-indentation measurements, Metallurgical and Materials Transactions A 46 (2015) 281-292.
• [23] S.M. Mousavi, J. Paavola, Analysis of a cracked concrete containing an inclusion within homogeneously imperfect interface, Mechanics Research Communications 63 (2015) 1-5.
• [24] T.Y. Shish, T. Araki, The effect of non-metallic inclusion and microstructures on the fatigue crack initiation and propagation in high strength carbon steel, Journal of ISIJ International 1 (1973) 11-19.
• [25] J.S. Park J.H. Park, Effect of Slag Composition on the Concentration of Al2O3 in the Inclusions in Si-Mnkilled steel, Metallurgical and Materials Transactions 45B (2014) 953-960.
• [26] S. Kocańda, J. Szala, Basis of fatigue calculation, PWN, Warsaw, 1985 (in Polish).
• [27] Guide engineer. Mechanic. Scientific and Technical Publishing, Warsaw, 1970 (in Polish).
• [28] J. Ryś, Stereology of materials, Fotobit Design, Cracow, 1995 (in Polish).