The Influence of Aluminium on the Spheroidization of Cast Iron Assessed on the Basis of Wedge Test

• Autorzy: Soiński M. S. , Jakubus A. , Stradomski G.
• Języki publikacji: EN

Abstrakty

EN

The paper discusses the influence of aluminium in quantities from about 1.9% to about 4.7% on both the alloy matrix and the shape of graphite precipitates in cast iron spheroidized with cerium mixture (added in the quantity of 0.11%) and inoculated with ferrosilicon (1.29%). The metallographic examinations were carried out for specimens cut out of the wedge test castings (22 mm base width, 120 mm height, 180 mm length) halfway along their length. It was found that the highest susceptibility to graphitization exhibits the cast iron containing about 2.8% Al. The alloy matrices were classified and the degrees of graphite spheroidization were determined. Microscopic observations were carried out along the wedge test casting height at several places, the first distant by 20 mm from the specimen apex, the next ones every 20 mm farther. Precipitates of nodular and vermicular graphite were found in the cast iron structure. The results of examination allow to state that cast iron spheroidized in the way described here is characterised by the degree of spheroidization which increase with an increase in aluminium content within the examined range.

Słowa kluczowe

EN

metallography; cast iron; aluminium; spheroidization; graphite precipitates

PL

metalografia; żeliwo; aluminium; sferoidyzacja; wydzielenia grafitu

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2013
• Tom: Vol. 13, iss. 1 spec.
• Strony: 163--168
• Opis fizyczny: Bibliogr. 16 poz., rys., tab., wykr.

Twórcy

autor

Soiński M. S.

• Department of Foundry, Częstochowa University of Technology, Armii Krajowej 19, 42-200 Częstochowa, Poland

autor

Jakubus A.

• Department of Foundry, Częstochowa University of Technology, Armii Krajowej 19, 42-200 Częstochowa, Poland

autor

Stradomski G.

• Department of Plastic Working and Safety Engineering, Częstochowa University of Technology, Armii Krajowej 19, 42-200 Częstochowa, Poland

Bibliografia

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• [3] Jonuleit, M. (2000). Casting defects in cast iron. In International Symposium “Modern technologies of production of the high-quality cast iron casting”. 2000 (33). Zawiercie.
• [4] Young, S. (1979). Effect of aluminium in cast iron. In 46th International Foundry Congress. (Paper No. 23). Madrid.
• [5] Yaker, J. A., Byrnes, L. E., Leslie, W. C. & Petitbon, E. U. (1977). Microstructures and strength of aluminium containing gray nodular irons in the temperature range 1200-1800F (649-982˚C). Giesserei-Prax. 19, 295-306.
• [6] 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 Częstochowa University of Technology.
• [7] Soiński, M. S. & Kukla, Ł. (2006). Investigations concerning production of low-aluminium-chromium cast iron with compact graphite. Archives of Foundry. 6(18), 165-170.
• [8] 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.
• [9] Soiński, M. S., Susek, P., Hübner, K. & Mierzwa, P. (2008). The low-aluminium cast iron of reduced silicon content treated with cerium mischmetal. Archives of Foundry Engineering. 8(2), 123-128.
• [10] 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.
• [11] Bobro, Ju. G. (1964). Aluminium cast irons. Charkov: Izd. Charkovskogo Univ.
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• [13] Boutorabi, S. M. A., Young, J. M. & Kondic, V. (1992). Ductile Aluminium Cast Iron. Cast Met. 5(3),122-129.
• [14] Soiński, M. S. (1986). Application of shape measurement of graphite precipitates in cast iron in optimizing the spheroidizing process. Acta Stereologica. 5(2), 311-317.
• [15] Polish Standard PN-EN ISO 945: Cast iron. Determining of features of graphite precipitates.
• [16] Polish Standard PN-75/H-04661: Grey cast iron, nodular cast iron and malleable. Metallographic examinations Determining of microstructure.