Researches Regarding the Influence of Alloying Elements on the Mechanical Properties of Lamellar Graphite Cast Iron

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Abstract

Aim of the study is to present the technological process of obtaining cast iron with lamellar graphite for use in the manufacture of cylinder liners, and to identify the main alloying elements and track their influence on the mechanical properties of cast iron with lamellar graphite.

Also paper presents analysis of 20 batches of cast iron with lamellar graphite, which are made of cylinder liners, in terms of chemical composition and the mechanical properties.

After the analysis of the 20 castings of cast iron Fc 250 it is observed that: the increase in the carbon content shows a decrease of the tensile strength and hardness of the gray cast iron; the increase in silicon content shows a decrease in hardness and tensile strength. Decreasing the amount of graphite and especially the alloy of silicon iron lead to hardness increase 1% Si increases hardness by 50 HB). A statistical analysis has been performed on the data obtained that accounts for changes in alloying additions. A modeling and optimization of mechanical properties (tensile strength and hardness) was performed according to the percentages of carbon, silicon and manganese. Mathematical modeling found that the hardness and traction resistance of the cast iron decreased with the increase in carbon, silicon and manganese content.

[1] B.V. Kovacs: AFS Trans. Vol. 89 (1981), p. 79-96.

[2] E.N. Pan, M.S. Lou and C.R. Loper: AFS Trans. Vol. 95 (1987), p. 819-840.

[3] L. Guerin and M. Gagne: The Foundryman Vol. 80 (1987), p. 336-344.

[4] G.M. Goodrich and R.W. Lobenhofer: AFS Trans., (2007).

[5] C. O. Rusănescu M. Rusănescu, F. V. Anghelina, V. Bratu, The influence of the micro-alloying elements on physical and structural characteristics of the some steel destined for manufacturing the oil pipes, Romanian Reports in Physics, Vol. 68 (1), (2016), p 278–293.

[6] C.O.Rusanescu, M. Rusanescu, The stress-strain curves determined for microalloy steel with v determined on the torsion tests, Metalurgia (Bucharest) 59.(1) (2007):p 38-44.

[7] J. Sertucha, P. Larranaga, J. Lacaze and M. Insausti: Int. J. Metalcasting Vol. 4 (2010), p 51-58.

[8] J. Sertucha, R. Suarez, J. Izaga, L.A. Hurtado and J. Legazpi: IJCMR Vol. 16 (2006), p. 315-322.

[9] H. Takeda, K. Asano and H. Yoneda: Int. J. Cast Met. Res. Vol. 21 (2008), p. 81-85.

[10] C.O.Rusanescu, M. Rusanescu, The stress-strain curves determined for microalloy steel with v determined on the torsion tests, Metalurgia (Bucharest) 59.(1) (2007): 38-44.

[11] Rusanescu C. O., Jinescu C., Paraschiv G., Biris S. St., Rusanescu M., Ghermec O., Influence of the Nb, V and Mo Elements on the Ecological Micro-alloyed Steel Properties, Revista de chimie, Volume: 66, Issue: 5, (2015), p: 754-757.

[12] T. Levin, P.C. Rosenthal, C.R. Loper and R.W. Heine: AFS Trans Vol. 79 (1971) p.493-514.

[13] T. Kanno, T. Kikuchi, I. Kang and H. Nakae: AFS Trans., (2005).

[14] G.S. Cho, K.H. Choe, K.W. Lee and A. Ikenaga: J. Mater. Sci. Tech. Vol. 23 (2007), p. 97-101.

[15] G.H. Hsu, M.L. Chen and C.J. Hu: Mater. Sci. Eng. A, Vol. A444 (2007), p. 339-346.

[16] I. Riposan, M. Chisamera and S. Stan: Int. J. Cast Met. Res. Vol. 20 (2007), p. 64-67.

[17] T. Nobuki, M. Hatate and T. Shiota: Int. J. Cast Met. Res. Vol. 21 (2008), p. 31-38.

[18] Petre, Wear model of sliding surfaces used in the machine-tools industry, The Scientific Bulletin of Valahia University, Materials and Mechanics, nr.9 (year 12) (2014), p. 99-104.

[19] Sofroni, L., Ștefănescu, D.M. și Vincenz, C. Fonta cu grafit nodular. Editura Tehnică, București. 1987.

[20] Ivona Camelia Petre, Ileana Nicoleta Popescu, The phenomenological analysis of the nature of the friction, from theoretical and experimental point of view of Al-Al2O3-graphite composite/cast iron „pin on disc” sliding system, International Journal of Mechatronics and Applied Mechanics, (2017), Issue 2.

[21] Sofroni, L., Ripoșan, I., Brabie, V. și Chișamera, M. Turnarea fontei. Editura Didactică și Pedagogică, București. 1985.

[22] A. Josan, D. Petre, I. Kiss.: Studies and researches on the influence of chemical composition of cast rolls made of hypereutectic steel, on their hardness in exploatation, Scientific Conference Research and Development of Mechanical Elements and Systems Jahorina – IRMES, Sarajevo, Bosnia & Hertegovina, 2002.

[23] Joan Serrallach, Jacques Lacaze, Jon Sertucha, Ramón Suárez, Adrián Monzón, Effect of Selected Alloying Elements on Mechanical Properties of Pearlitic Nodular Cast Irons, Key Engineering Materials Vol. 457 (2011) p. 361-366.

[24] C. O. Rusănescu M. Rusănescu, F. V. Anghelina, T. Iordanescu, Mathematical relation ships between alloying elements and technological deformability indexes, Journal of Optoelectronics and Advanced Materials 15(7) (2013), p.718-723.

[25] Rusanescu C. O., Jinescu C., Rusanescu M., Enescu M. C., Anghelina F. V., Stoian E. V., Despa V., Mathematical Modelling of the Stress-Strain Curve for 31VMn12 Ecological Steel, Materiale plastice, Volume: 54, Issue: 3, (2017), p. 409-413.

[26]D.Taloi, E. Florian, C.Bratu, E.Berceanu, The optimization of metallurgical processes, Bucharest 1983.

[27]I.Ciuca, S.Dimitriu, Modelarea si optimizarea proceselor metalurgice de deformare plastic si tratamente termice, Editura Didactica si Pedagogica, Bucharest, 1998.

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