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Mechanical and Microstructural Properties of Brazed Honeycomb Liner Material Haynes 214

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Proceedings of the 10th International Symposium on Superalloy 718 and Derivatives (TMS 2023)

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Abstract

Abradable honeycomb sealing systems are widely used in turbines to improve efficiency and thus reduce carbon dioxide emissions. The honeycomb sealing systems are produced by brazing together nickel-based superalloy sheets with a nickel-based brazing metal. This investigation aimed to generate data on the mechanical performance of Haynes 214 metal sheets brazed with the nickel–chromium-silicon filler metal BNi-5 (71 wt.% Ni, 19 wt.% Cr, 10 wt.% Si). Tensile properties of brazed metal sheet composites are tested. Interdiffusion zones and hard particles with high chromium contents are observed along the brazed joint. Even a very thin brazing layer reduces the ductility considerably.

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Correspondence to Uwe Glatzel .

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Vogler, J., Song, J., Huber, J., Völkl, R., Glatzel, U. (2023). Mechanical and Microstructural Properties of Brazed Honeycomb Liner Material Haynes 214. In: Ott, E.A., et al. Proceedings of the 10th International Symposium on Superalloy 718 and Derivatives. TMS 2023. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-031-27447-3_28

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