Mechanical and Microstructural Properties of Brazed Honeycomb Liner Material Haynes 214

Abradable honeycombHoneycomb sealing systems are widely used in turbines to improve efficiency and thus reduce carbon dioxide emissions. The honeycombHoneycomb sealing systems are produced by brazingBrazing together nickel-based superalloyNickel-based superalloys sheets with a nickel-based brazingBrazing metal. This investigation aimed to generate data on the mechanical performance of Haynes 214Haynes 214 metal sheets brazed with the nickel–chromium-silicon filler metal BNi-5 (71 wt.% Ni, 19 wt.% Cr, 10 wt.% Si). Tensile propertiesTensile 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 brazingBrazing layer reduces the ductility considerably.