Effect of modification and cooling rate on the microstructure of IN-713C alloy

• Autorzy: Binczyk F. , Śleziona J. , Kościelna A.
• Języki publikacji: EN

Abstrakty

EN

The results of investigations of the effect of modification and cooling rate on the microstructure of castings made from IN-713C nickel superalloy were described. As an inoculant, cobalt aluminate CoAl2O4 in composition with aluminium powder and colloidal silica was used. Changes in the cooling rate were obtained by the use of cast stepped test piece with steps of 6, 11 and 17 mm thickness. The phase and chemical composition of microstructural constituents, i.e. of \gamma phase, \gamma' phase and eutectic carbide precipitates, was evaluated. A significant effect of the cooling rate and modification treatment on the stereological parameters of carbide precipitates was confirmed. Problems in evaluation of the chemical composition of these precipitates in the case of a high degree of the structure refinement were indicated.

Słowa kluczowe

EN

nickel superalloys; microstructure; cooling rate; modification; microanalysis

PL

nadstop niklu; mikrostruktura; szybkość chłodzenia; modyfikacja; mikroanaliza

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2009
• Tom: Vol. 9, iss. 4
• Strony: 5--8
• Opis fizyczny: Bibliogr. 9 poz., rys., tab., wykr.

Twórcy

autor

Binczyk F.

autor

Śleziona J.

autor

Kościelna A.

• Chair of Metal Alloys and Composites Engineering, Silesian University of Technology, Krasińskiego Str. 8, 40-019 Katowice, Poland,

Bibliografia

• [1] F. Zupanic, T. Boncina, A. Krizman, F.D. Tichelaar: Structure of continuously cast Ni-based superalloy Inconel 713C, Journal of Alloys and Compounds, volume 329, issue 1-2, November 14, 2001, pp.290-297.
• [2] M. Tabuchi, K. Kubo, K. Yagi, A. T. Yokobori Jr, A. Fuji: Results of a Japanese round robin on creep crack growth evaluation methods for Ni-base superalloys, Engineering Fracture Mechanics, volume 62, issue 1, January 1999, pp. 47-60.
• [3] A. Smith, A. Mainwood, M. Watkins: The kinetics of the capture of nitrogen by nickel defects in diamond, Diamond and Related Materials, volume 11, issue 3-6, March-June, 2002, pp. 312-315.
• [4] M. Lachowicz: Characteristics of microstructural changes and fracture mechanism during welding and heat treatment of Inconel 713C superalloy, Doctor's Thesis Politechnika Wrocławska, 2006.
• [5] Hartman D., Muerrle U., Reber G.: The effects of electron beam refining on the castability of IN 713 C, Metall, 1992, nr 5, pp.443-447.
• [6] Binczyk F., Śleziona J., Cwajna J., Roskosz S.: ATD and DSC analysis of nickel superalloys, Archives of Foundry Engineering, vol. 8, Issue 3, 2008, pp.5-9.
• [7] Binczyk F., Śleziona J.: Macrostructure of IN-713C superalloy after volume modification, Archives of Foundry Engineering, vol. 9, Issue 2, 2009, pp.105-108.
• [8] Binczyk F., Śleziona J.: Phase transformations and microstructure of IN-713C nickel superalloy, Archives of Foundry Engineering, vol. 9, Issue 2, 2009, pp.109-112.
• [9] Binczyk F., Śleziona, J, Kościelna A.: Effect of modification and cooling rate on the macrostructure of IN-713C alloy, Archives of Foundry Engineering, vol. 9,Issue 3, 2009, pp.13-16.