Application of Modified Cores for Grain Refinement in Castings of Aircraft Turbine Blades

• Autorzy: Binczyk F. , Cwajna J. , Gradoń P.

Identyfikatory

DOI

10.1515/afe-2017-0083

• Języki publikacji: EN

Abstrakty

EN

Paper presents the results of research on modified surface grain refinement method used in investment casting of hollow, thin-walled parts made of nickel based superalloys. In the current technology, the refining inoculant is applied to the surface of the wax pattern and then, it is transferred to the ceramic mould surface during dewaxing. Because of its chemical activity the inoculant may react with the liquid metal which can cause defects on the external surface of the cast part. The method proposed in the paper aims to reduce the risk of external surface defects by applying the grain refiner only to the ceramic core which shapes the internal surface of the hollow casting. In case of thin-walled parts the grain refinement effect is visible throughout the thickness of the walls. The method is meant to be used when internal surface finish is less important, like for example, aircraft engine turbine blades, where the hollowing of the cast is mainly used to lower the weight and aid in cooling during operation.

Słowa kluczowe

EN

innovative casting materials; innovative casting technologies; Nickel alloy IN-713C; surface modification; turbine blades; macrostructure

PL

innowacyjne materiały odlewnicze; innowacyjne technologie odlewnicze; Stop niklu IN-713C; modyfikacja powierzchni; łopatki turbinowe; makrostruktura

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2017
• Tom: Vol. 17, iss. 3
• Strony: 19--22
• Opis fizyczny: Bibliogr. 14 poz., il., rys., tab.

Twórcy

autor

Binczyk F.

• Institute of Metals Technology Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, Poland

autor

Cwajna J.

• Institute of Materials Science Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, Poland

autor

Gradoń P.

• Institute of Metals Technology Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, Poland

Bibliografia

• [1] Fang Jian, Yu Bin, (1982). Investigation of the Surface Grain Refinement for Superalloys Castings. In R. Brunetaud, D. Coutsouradis et al. (Eds.). High Temperature Alloys for Gas Turbines (pp. 987-997). Brussels: Springer Netherlands.
• [2] Reed, R.C. (2006). The Superalloys – Fundamentals and Applications. New York: Cambridge University Press.
• [3] Campbell, J. (2011). Complete Casting Handbook. Oxford, Butterworth-Heinemann.
• [4] Zielińska, M., Sieniawski, J. & Poręba, M. (2007). Microstructure and mechanical properties of high temperature creep resisting superalloy Ren´e 77 modified CoAl2O4. Archives of Materials Science and Engineering. 28(10), 633-636.
• [5] Zielińska, M., Sieniawski, J. & Wierzbińska, M. (2008). Effect of modification on microstructure and mechanical properties of cobalt casting superalloy. Archives of Metallurgy and Materials. 53(3), 887-893.
• [6] Yuhua Xiong, Xiu Ying Wei, Jun Du, Aimin Yang, Lin Liu, & Daben Zeng, (2004). Grain refinement of Superalloy IN718C by the addition of Inoculants. Metallurgical and Materials Transactions. A. 35(7), 2111–2114.
• [7] Wenzhong Jin, Fudong Bai, Tingju Li, Guomao Yin, (2008). Grain refinement of superalloy IN100 under the action of rotary magnetic fields and inoculants. Materials Letters. 62, 1585-1588.
• [8] Matysiak, H., Zagórska, M., Balkowiec, A., Adamczyk-Cieślak B., Dobkowski K., Koralnik M., Cygan R., Nawrocki J., Cwajna J. & Kurzydłowski K.J. (2016). The Influence of the Melt-Pouring Temperature and Inoculant Content on the Macro and Microstructure of the IN713C Ni-Based Superalloy. JOM. 68(1), 185-197.
• [9] Lin Liua, Taiwen Huanga, Yuhua Xiongb, Aimin Yangc, Zhilong Zhaoa, Rong Zhanga & Jinshan Lia, (2005). Grain refinement of superalloy K4169 by addition of refiners: cast structure and refinement mechanisms. Materials Science and Engineering. A 394, 1-8.
• [10] Binczyk, F. & Śleziona, J. (2010). Effect of modification on the mechanical properties of IN-713C alloy. Archives of Foundry Engineering. 10(1), 195-198.
• [11] Binczyk, F., Śleziona, J. & Gradoń, P. (2011). Modification of the macrostructure of nickel superalloys with cobalt nanoparticles. Composites. 1, 49-55.
• [12] Whateley P.N. (1999). U.S. Patent No. 5,983,983. Washington, D.C.: U.S. Patent and Trademark Office.
• [13] Binczyk, F., Cwajna, J., Gradoń, P,. Mańka, M. & Findziński, R. (2015). Surface modification of cored thin walled castings of nickel superalloy IN-713C. Archives of Foundry Engineering. 15(3), 17-20.
• [14] Szala, J. (2001) Application of computer image analysis to quantity the structure of materials. Silesian University of technology Press. Gliwice. (in Polish).

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)