FINITE-ELEMENT MODELING OF HOT FORMING OF BUSHES MADE FROM HIGH-STRENGTH CAST IRON WITH A GRADIENT DISTRIBUTION OF GRAPHITE INCLUSIONS OVER CROSS-SECTION
Abstract
Imitation modeling of direct hot extrusion of bushes made from high-strength cast iron is performed using finite-element method. The evolution of stress and strain fields during processing and the probability of crack formation are evaluated. The specific feature of the work is that during hot forming a special technique was used which permitted obtaining a gradient distribution of graphite inclusions over the cross-section of bushes. The results of modeling are used in certain technologies which are implemented in industrial practice.
About the Authors
A. I. Pokrovsky
Physical-Engineering Institute of the NAS of Belarus
Belarus
Belarus
P. E. Lushchik
Scientific-technological park of BNTU «Polytechnic»
Belarus
Belarus
References
1. Gubkin S. I. Teoriya techeniya metallicheskogo veschestva [The theory of flow of metals]. Moskow–Leningrad, ONTI Publ., 1935, 91 p.
2. Severdenko V. P. Teoriya obrabotki metallov davleniem [Theory of Metal Forming]. Minsk, Vysheyshaya shkola Publ., 1966. 224 p.
3. Severdenko V. P., Muras V. S., Suhodrev E. S h. Goryachee gidrodinamicheskoje vydavlivanie rezhuschego instrumenta [Hot hydrodynamic extrusion of cutting tools]. Minsk, Nauka i tehnika Publ., 1974. 256 p.
4. Antonishin Y u. T. Plasticheskaya deformatsiya chuguna [Plastic deformation of cast iron]. Minsk, Navuka i tehnika Publ., 1991. 119 p.
5. Dudetskaya L. R., Pokrovskiy A. I. Issledovanie prochnosti i plastichnosti chugunov v goryachem sostoyanii [Investigation of strength and ductility of cast iron in the hot condition]. Vestsi NAN Belarus. Seriya fiz.-tehn. navuk = Proceedings of the National Academy of Sciences of Belarus, ser. Physical and Technical Sciences, 2000, no. 4, pp. 51–55.
6. Pokrovskiy A. I., Laskovnev A. P. Issledovanie plastichnosti i tehnologicheskoy deformiruemosti chuguna / Razdel v kollekt. monografii «Perspektivnyje materialy i tehnologii» (glava 27). Pod red. V. V. Klubovicha [Study of plasticity and technological deformability of cast iron. Collective monograph «Advanced Materials and Technologies» (chapter 27). Ed. By V. V. Klubovich]. Vitebsk, VGTU Publ., 2013. 655 p.
7. Pokrovskiy A. I. Goryachaya plasticheskaya deformatsiya chuguna: struktura, svoystva, tehnologicheskie osnovy [Hot plastic deformation of iron: structure, properties, technological foumdations]. Minsk, Belaruskaja navuka Publ., 2010. 256 p.
8. Pokrovskiy A. I. Plasticheskoe techenie vklyucheniy tsementita i grafita pri obrabotke davleniem chuguna [Plastic flow of cementite and graphite inclusions in pressure forming of cast iron]. Lit’e i metallurgiya = Foundry production and metallurgy, 2013, no. 1 (69), pp. 88–95.
9. Pokrovskiy A. I., Luschik P. E. Chislennoe modelirovanie naprjazhenno-deformirovannogo sostoyaniya i osobennosti strukturoobrazovaniya chuguna pri goryachem vydavlivanii [Numerical simulation of stress-strain state and peculiarities of structure of iron during hot extrusion]. Lit’e i metallurgiya = Foundry production and metallurgy, 2014, no. 4 (77), pp. 33–43.
10. Patent Respubliki Belarus’ 4741 ot 18.06.2002 po zayavke 970621 ot 18.11.1997. Dudetskaya L. R., Danil’chik I. K., Pokrovskiy A. I. Sposob izgotovleniya porshnevyh kolets [A method of manufacturing piston rings]. The patent of Republic of Belarus, no. 4741 of 18.06.2002 on the application of the 970 621 18.11.1997.
11. Patent Respubliki Belarus’ 16220 ot 11.05.2012 po zayavke a20100846 ot 31.05.2012. Pokrovskiy A. I., Hrol’ I. N. Sposob izgotovleniya podshipnika skol’zheniya [A method for producing sliding bearings]. The patent of Republic of Belarus, no. 16220 from 11.05.2012 to 31.05.2012 by a20100846 application.
12. Prigorovskiy N. I. Metody i sredstva opredeleniya poley deformatsiy i naprjazheniy [Methods and means for determining the strain and stress fields. A handbook]. Moscow, Mashinostroenie Publ., 1983. 248 p.
13. Abdellah, Mohammed Y., Mohamed K. Hassan and H. M. Abu El-Ainin. Plasticity and formability controlling of cast iron using thermo-mechanical treatment. American Journal of Materials Engineering and Technology. 2014, vol. 2, no. 3, pp. 38–42.
14. Qi, Kai et al. Research on the hot deformation behavior and graphite morphology of spheroidal graphite cast iron at high strain rate. Materials & Design, 2009, vol. 30, no. 10, pp. 4511–4515.
15. Yong, Xue et al. Study on critical damage factor and phenomenological constitutive model including dynamic recrystallization softening of AZ80 magnesium alloy. Rare Metal Materials and Engineering, 2012, vol. 41, pp. 250–253.
Review
For citations:
Pokrovsky A.I., Lushchik P.E. FINITE-ELEMENT MODELING OF HOT FORMING OF BUSHES MADE FROM HIGH-STRENGTH CAST IRON WITH A GRADIENT DISTRIBUTION OF GRAPHITE INCLUSIONS OVER CROSS-SECTION. Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY). 2016;(1):96-107. (In Russ.)
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