The Influence of Small Amounts of Aluminium on the Spheroidization of Cast Iron with Cerium Mischmetal

Open access

The Influence of Small Amounts of Aluminium on the Spheroidization of Cast Iron with Cerium Mischmetal

The influence of aluminium (added in quantity from about 0.6% to about 2.8%) on both the alloy matrix and the shape of graphite precipitates in cast iron treated with a fixed amounts of cerium mischmetal (0.11%) and ferrosilicon (1.29%) is discussed in the paper. The metallographic examinations were carried out for specimens cut out of the separately cast rods of 20 mm diameter. It was found that the addition of aluminium in the amounts from about 0.6% to about 1.1% to the cast iron containing about 3% of carbon, about 3.7% of silicon (after graphitizing modification), and 0.1% of manganese leads to the occurrence of the ferrite-pearlite matrix containing cementite precipitates in the case of the treatment of the alloy with cerium mischmetal. The increase in the quantity of aluminium up to about 1.9% or up to about 2.8% results either in purely ferrite matrix in this first case or in ferrite matrix containing small amounts of pearlite in the latter one. Nodular graphite precipitates occurred only in cast iron containing 1.9% or 2.8% of aluminium, and the greater aluminium content resulted in the higher degree of graphite spheroidization. The noticeable amount of vermicular graphite precipitates accompanied the nodular graphite.

Bobro Ju. G. (1964). Aluminium cast irons. Charkov: Izd. Charkovskogo Univ.

Dumitrescu T. (1959). Study of influence of aluminium on microstructure of cast iron with flake or nodular graphite. Rev. Roumaine Metall. 4 (1), 15-28.

Piaskowski J., Jankowski A. (1974). Nodular cast iron. Warsaw: WNT.

Podrzucki C., Kalata C. (1976). Cast iron metallurgy and casting. Katowice: Ed. Śląsk.

Podrzucki C. (1991). Cast iron. Structure, properties, applications. Cracow: Ed. ZG STOP.

Hasse S. (1995). Influence of trace elements in nodular cast iron. Giesserei Prax. 15/16, 271-278.

Gerockij V. A., Fišer V. B., Aleksandrov O. D. et al. (1976). Influence of aluminium on the structure and properties of nodular cast iron. Litejnoe Proizvodstvo. 6, 4.

Jonuleit M. (2000). Casting defects in cast iron. In International Symposium "Modern technologies of production of the high-quality cast iron casting". (33). Zawiercie.

Young S. (1979). Effect of aluminium in cast iron. In 46th International Foundry Congress. 2003 (Paper No. 23). Madrid.

Soiński M. S. (2001). Spheroidizing of low-aluminium silicon-containing cast iron with cerium mischmetal. Częstochowa: Ed. of the Faculty of Process and Material Engineering and Applied Physics of TU Częstochowa.

Soiński M. S., Kukla Ł. (2006). Investigations concerning production of low-aluminium-chromium cast iron with compact graphite. Archives of Foundry. 6(18, 2/2), 165-170.

Soiński M. S., Grzesiak K. (2004). Investigations concerning production of hypoeutectic low-aluminium cast iron with compact graphite. Archives of Foundry. 4 (11), 184-189.

Soiński M. S., Susek P, Hübner K. et al. (2008). The low-aluminium cast iron of reduced silicon content treated with cerium mischmetal. Archives of Foundry Engineernig. 8 (2), 123-128.

Soiński M. S. (1986). Application of shape measurement of graphite precipitates in cast iron in optimising the spheroidizing process. Acta Stereologica. 5 (2), 311-317.

Polish Standard PN-EN ISO 945: Cast iron. Determining of features of graphite precipitates.

Polish Standard PN-75/H-04661: Grey cast iron, nodular cast iron and malleable. Metallographic examinations. Determining of microstructure.

Archives of Foundry Engineering

The Journal of Polish Academy of Sciences

Journal Information

CiteScore 2016: 0.42

SCImago Journal Rank (SJR) 2016: 0.192
Source Normalized Impact per Paper (SNIP) 2016: 0.316


All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 146 117 15
PDF Downloads 64 54 5