The Role of Carbon in the Mechanism of Ferritic-Austenitic Cast Steel Solidification

• Autorzy: Stradomski G.
• Języki publikacji: EN

Abstrakty

EN

The paper presents the results of research on the microstructure of GX2CrNiMoCuN25-6-3-3 and GX2CrNiMoCuN25-6-3 cast steels with a varying carbon content. The cause for undertaking the research were technological problems with hot cracking in bulk castings of duplex cast steel with a carbon content of approx. 0.06% and with 23% Cr, 8.5% Ni, 3% Mo and 2.4% Cu. The research has shown a significant effect of increased carbon content on the ferrite and austenite microstructure morphology, while exceeding the carbon content of 0.06% results in a change of the shape of primary grains from equiaxial to columnar.

Słowa kluczowe

EN

duplex cast steel; microstructure; hot crack; primary structure

PL

staliwo typu duplex; mikrostruktura; pękanie; struktura

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2014
• Tom: Vol. 14, iss. 3
• Strony: 83--86
• Opis fizyczny: Bibliogr. 10 poz., rys., tab.

Twórcy

autor

Stradomski G.

• Institute Metal Forming and Safety Engineering, Faculty of Production Engineering and Materials Technology, Technical University of Częstochowa, Poland

Bibliografia

• [1] Stradomski, Z., Soiński, M.S., Stradomski, G. (2010). The assessment of hot cracking susceptibility of ferritic-austenitic cast iron. Archives of Foundry Engineering. 10(2), 159-162.
• [2] Dyja, D., Stradomski, Z., Kolan C., Stradomski, G. (2012). Eutectoid decomposition of δ-ferrite in ferritic-austenitic duplex cast steel – structural and morphological study. Thermec Materials Science Forum 706-709, 2314-2319.
• [3] Stradomski, G., Soiński, M.S., Nowak, K.& Szarek, A. (2012). The assessment of tendency to develop hot cracks in the duplex casts. Steel Research International Spec. Edition Metal Forming. 1231-1234.
• [4] Dyja, D. & Stradomski, Z. (2006). Solidification model of highly alloyed FE-Cr-Ni cast steels. Archives of Foundry. 6(19), 81-88.
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• [9] Ping, L., Qizhou, C. & Bokang W. (2006). Failure analysis of the impeller of slurry pump used in zinc hydrometallurgy process. Engineering Failure Analysis 13, 876-885.
• [10] Pietrowski, S., Gumienny, Masalski, M. (2011). Selected properties of new „duplex” cast steel. Archives of Foundry Engineering. 11(4), 123-130.