Characteristics of centrifugally cast GX25CrNiSi18-9 steel

• Autorzy: Zapała R. , Kalandyk B. , Rakowska A.
• Języki publikacji: EN

Abstrakty

EN

The paper presents the results of microstructural examinations of the industrial heat-resistant centrifugally cast GX25CrNiSi18-9 steel characterised by increased content of Cu. The study included changes in the microstructure of base cast steel respective of the steel held at a temperature of 900 and 950°C for 48 hours. Based on the results obtained, an increase in microhardness of the examined cast steel matrix with increasing temperature was stated, which was probably caused by fine precipitates enriched in Cr, Mo, and C forming inside the matrix grains. The layer of scale formed on the tested cast steel oxidised in the atmosphere of air at 900 and 950°C was characterised by an increased tendency to degradation with increasing temperature of the conducted tests.

Słowa kluczowe

EN

metallography; heat resistance; cast steel

PL

metalografia; żaroodporność stopu; staliwo

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2011
• Tom: Vol. 11, iss. 3 spec.
• Strony: 249--254
• Opis fizyczny: Bibliogr. 8 poz., rys., tab., wykr.

Twórcy

autor

Zapała R.

• Department of Cast Alloys and Composites Engineering, Faculty of Foundry Engineering, AGH University of Science and Technology, Reymonta 23 Str., 30-059 Krakow, Poland

autor

Kalandyk B.

• Department of Cast Alloys and Composites Engineering, Faculty of Foundry Engineering, AGH University of Science and Technology, Reymonta 23 Str., 30-059 Krakow, Poland

autor

Rakowska A.

• Department of Solid State Chemistry, Faculty of Materials Science and Ceramics AGH University of Science and Technology, Mickiewicza 30 Ave., 30-059 Krakow, Poland

Bibliografia

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• [4] A. J. Sedriks, Corrosion of stainless steel, 2nd Ed., NY Wiley, New York, (1996).
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• [6] T. Sourmail, Precipitation in creep resistant austenitic stainless steel, Materials Sci and Technology, vol. 17, No. 1 (2001) 1-14.
• [7] D. Landolt, Corrosion and surface chemistry of metals, EPFL Press, Lausanne (2007).
• [8] V.B. Trindade, U. Krupp, P.E.G. Wagenhuber, H.J. Christ, Oxidation mechanisms of Cr-containing steels and Ni-base at high – temperatures, Materials and Corrosion, vol. 56, No. 11 (2005).