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Perrut, Mikael Caron, Pierre Thomas, Marc Couret, Alain
Two outstanding aerospace-oriented high-temperature materials, the single-crystal nickel-based superalloys for high-pressure turbine blades and the γ-TiAl-based alloys for low pressure turbine blades, are being presented here. In both cases, the optimisation of their mechanical properties is based on a high knowledge of metallurgy, mixing together ...
Braun, R. Lange, A. Schulz, U. Portebois, L. Mathieu, S. Vilasi, M. Drawin, S.
Environmental/thermal barrier coatings (E/TBCs) of yttria partially stabilised zirconia (YSZ), gadolinium zirconate (GZO) and a combination of Y2SiO5 and GZO were applied on a Nb/Nb5Si3-based alloy with the nominal composition of Nb-25Ti-8Hf-2Cr-2Al-16Si (at%). A B-containing M7Si6-based (M=Ti, Nb, Fe, Cr) layer produced by pack cementation was use...
Kubacki, Slawomir Dick, Erik
Kubacki, S. Lodefier, K. Zarzycki, R. Elsner, W. Dick, E.
Published in
Flow, Turbulence and Combustion
The transition model studied in this paper uses an equation for free-stream intermittency and one for near-wall intermittency, combined with the SST turbulence model. The model was already assessed in earlier work for wake-induced transition in boundary layers in separated state and in attached state. For separated state transition, the model predi...
Schulz, A. Schiele, R. Wittig, S. univ., karlsruhe
A measuring system is to be developed that enables high-resolution heat transfer measurements on turbine blades. The method of measurement is both theoretical and experimental. Heat transfer is calculated on the basis of the temperature field in the blade via the temperature gradients normal to the blade surface. The temperature field is calculated...
Schulz, A. Schiele, R. Wittig, S. univ., karlsruhe
Germany