The Effect of Superalloy Structure on Ultrasonic Wave Parameters

• Autorzy: Nawrocki J. , Gancarczyk K. , Manaj W. , Albrecht R. , Cygan R. , Krupa K.

Identyfikatory

DOI

10.1515/fas-2015-0010

• Języki publikacji: EN

Abstrakty

EN

This paper analyses the nickel based superalloy Inconel 713C casts typically used in high and low pressure turbines of aircraft engines. The ingots were manufactured in the Research and Development Laboratory for Aerospace Materials at the Rzeszów University of Technology. The superalloy structures were analysed by the following methods: X-ray diffraction orientation measurement and ultrasonic wave propagation. Ultrasonic techniques are mainly used to measure the blade wall’s thickness. Measurement accuracy is determined by the velocity of the ultrasonic wave in the material tested. This work evaluates the effect of the nickel-based superalloy microstructure on the velocity of the ultrasonic wave propagation. Three different macrostructures: equiax (EQ), directionally solidified (DS) and single crystal (SX) were analysed. The authors determined the crystal misorientation in the obtained casts as the deviation of [001] crystallographic direction from the withdrawal axis or the main axis of the ingots. The measurements performed allowed researchers to identify significant differences in the wave velocity between EQ, DS and SX structures.

Słowa kluczowe

EN

ultrasonic nondestructive testing; superalloy; turbine blade; macrostructure; crystalline orientation

• Wydawca: Wydawnictwa Naukowe Sieci Badawczej Łukasiewicz - Instytutu Lotnictwa
• Czasopismo: Fatigue of Aircraft Structures
• Rocznik: 2015
• Tom: Iss. 7
• Strony: 61--65
• Opis fizyczny: Bibliogr. 8 poz., rys., tab., wykr.

Twórcy

autor

Nawrocki J.

• Research and Development Laboratory for Aerospace Materials, Rzeszow University of Technology, Poland

autor

Gancarczyk K.

• Department of Material Science, Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, Poland

autor

Manaj W.

• Institute of Aviation, Warsaw, Poland

autor

Albrecht R.

• Institute of Materials Science, University of Silesia, Katowice, Poland

autor

Cygan R.

• Pratt & Whitney Rzeszów” S.A, factory

autor

Krupa K.

• Research and Development Laboratory for Aerospace Materials, Rzeszow University of Technology, Poland

Bibliografia

• [1] Sims, C.T., Stoloff, N.S., Hagel, W.C. (1987). Superalloys II. A Wiley-Interscience Publication John Wiley & Sons.
• [2] Reed R. C. (2006). The Superalloys. Fundaments and Application. Cambridge University Press.
• [3] Carl, V., Becker, E., Sperling, A. (1998). Thermography inspection system for gas turbine blades. Proceedings 7th European Conference on NDT. Copenhagen, p. 2658-2665.
• [4] Kilian, D. (1999). 3D tomography of turbine blades. Proceedings of the International Symposium of Computerized Tomography for Industrial Applications. Berlin, 31, p. 1-17.
• [5] Le Bihan, Y., Joubert, P-Y., Placko, D. (2001). Wall thickness evaluation of single crystal hollow blades by eddy current sensor. ND&E International. 34, p. 363-368.
• [6] Lane, C. (2014). The Development of a2D Ultrasonic Array Inspection for Single Crystal Turbine Blades. Springer Theses. Springer International Publishing. Switzerland, p. 63-79.
• [7] Rinkevich, A. B., Stepanova, N.N., Rodinov D.P., Perov, D.V. (2009). Ultrasonic Testing of Single- and Polycrystal Articles Made of Nickel-Based Heat-Resistant Alloys. Russian Journal of Nondestructive Testing, vol. 45, no. 11, p. 3-21.
• [8] Zielińska, M., Sieniawski, J., Poreba, M. (2007). Microstructure and mechanical properties of high temperature creep resisting superalloy René 77 modified CoAl2O4. Archives of Materials Science and Engineering, vol. 28, no. 10, p. 629-632.

Uwagi

EN

The authors gratefully acknowledge the funding of the Polish National Centre for Research and Development. The project was realized within the frames of the Program DEMONSTRATOR PLUS UOD-DEM-1-557/001.

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.