THE INFLUENCE OF CHEMICAL COMPOSITION ON THE CORROSION RATE OF HIGH-CHROMIUM CAST IRON
Abstract
The influence of the chemical composition on the corrosion rate of high-chromium cast iron was researched. During the castings’ cooling process the replacement of the atoms of nickel, iron and manganese by the atoms of chromium in the carbides took place. As a result, the areas with reduced chromium content were formed near carbides. After decreasing the chromium content in these areas below 12% the corrosion processes activated. Using the mathematical experimental design techniques the regression dependence between the corrosion rate of the cast irons and content of C, Cr, Mn and Ni in them was established. The conducted research showed that the minimum corrosion rate was observed in the cast iron containing: 1.09% C, 25.57% Cr, 0.6% Mn and 1.87% Ni. The obtained results allow predicting the corrosion rate of the high-chromium cast irons alloyed with Mn and Ni and may be used while establishing the new compositions of wear-resistant materials.
About the Authors
V. V. Netrebko
Zaporizhzhya National Technical University
Ukraine
Zaporozhie city, 64, Zhukovskogo str.
Ukraine
Zaporozhie city, 64, Zhukovskogo str.
I. P. Volchok
Zaporizhzhya National Technical University
Ukraine
Zaporozhie city, 64, Zhukovskogo str.
Ukraine
Zaporozhie city, 64, Zhukovskogo str.
References
1. Gulyaev A. P. Metallovedenie [Physical metallurgy]. Moscow, Metallurgiya Publ., 1978. 648 p.
2. Malakhov A. I., Zhukov A. P. Osnovy metallovedeniya i teorii korrozii [Basics of metal science and corrosion theoretics]. Moscow, Vysshaya shkola Publ., 1978. 192 p.
3. Gudremon E. Spetsialnye stali [Special Steels]. Moscow, Metallurgiya Publ., 1966. Vol. 1, 736 p.
4. Kubashevski O. Diagrammy sostoyaniya dvoynykh sistem na osnove zheleza. Spravochnik [State diagrams of iron-based binary systems. Reference book]. Translated from English. Moscow, Metallurgiya Publ., 1985. 184 p.
5. Metallovedenie i termicheskaya obrabotka stali. Spravochnik. T. 1 [Metal science and heat treatment of steel. Reference book. Vol. 1]. Edited by M. L. Bernshteyn, A. G. Rakhshtadt. Moscow, Metallurgizdat Publ., 1961. 747 p.
6. Gierek A., Bajka L. Zeliwo stopowe jako tworzywo konstrukcyjne [Cast iron as a structural material for alloys]. Katowice, Slask Publ., 1976. 230.
7. Garber M. Ye. Iznosostoykie belye chuguny [Wear resistant white cast irons]. Moscow, Mashinostroenie Publ., 2010. 280 p.
8. Volchok I. P., Netrebko V. V. Osobennosti legirovaniya margantsem iznosostoykikh vysokokhromistykh chugunov [Peculiarities of alloying of high-chromium cast irons with manganese]. Lit’e i metallurgiya = Foundry Production and Metallurgy, 2012, no. 3, pp. 162–165.
9. Belikov S., Volchok I., Netrebko V. Manganese influence on chromium distribution in high-chromium cast iron.Archives of Metallurgy and Materials. Institute of metallurgy and materials science of Polish academy of sciences, 2013, Vol. 58, issue 3, pp. 895– 897.
10. Kirillov A. A., Belov V. D., Rozhkova Ye. V. and oth. Strukturno i nestrukturno chuvstvitelnye svoystva khromistykh chugunov [Structurally and non-structurally susceptible properties of chromium cast irons]. Chernye metally = Ferrous metals, 2007, no. 9, pp. 7–13.
11. Girshovich N. G. Kristallizatsiya i svoystva chuguna v otlivkakh [Crystallization and cast iron’s properties in the castings]. Moscow–Leningrad, Mashinostroenie Publ., 1966. 564 p.
12. Cheylyakh A. P. Ekonomnolegirovannye metastabilnye splavy i uprochnyayushchie tekhnologii [Sparingly alloyed metastable alloys and strengthening technologies]. Kharkov, NNTs KhFTI Publ., 2003. 212 p.
Review
For citations:
Netrebko V.V., Volchok I.P. THE INFLUENCE OF CHEMICAL COMPOSITION ON THE CORROSION RATE OF HIGH-CHROMIUM CAST IRON. Litiyo i Metallurgiya (FOUNDRY PRODUCTION AND METALLURGY). 2016;(4):38-43. (In Russ.)
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