Main Article Content
The purpose of this work was to assess the influence ofbrazing temperature on microstructure of the cobalt-based Inconel 783 superalloy joint with nickel-based Hastelloy X superalloy ‒ seal shaped in honeycomb structure. Brazing process was combined with solution heat treatment of Inconel 783 in one operation. Nickel based brazing filler metal from BNi-2 group was used. Tests were conducted in 1121 °C (solutionizing temperature), 1075 °C and 1030 °C in 1 hour. Subsequently, metallographic investigations were made using optical and scanning electron microscopes, mainly focused on changes in a seal made of Hastelloy X, where joint erosion in higher temperature was observed.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Zhang L., He L., Hu H., Feng H., Honeycomb seal technology achieves superior sealing effect in centrifugal air compressor – Part I. Sealing Technology, 2018, Vol. 2018(7), 8-10.
Collins D., Teixeira J., Crudgington P., The degradation of abradable honeycomb labyrinth seal performance due to wear. Sealing Technology, 2008, Vol. 2008(8), 7-10.
Kay D., Honeycomb-brazing essentials for successful use as turbine seals. Industrial Heating, 2003, Vol. 70(11), 33-37.
Sporer D., Fortuna D., Selecting materials for brazing a honeycomb in turbine engines. Welding Journal, 2014,
Vol. 93(2), 44-48.
Special Metals, online: http://www.specialmetals.com/assets/smc/documents/ alloys/inconel/inconel-alloy-783.pdf (access date 08.05.2019).
Kang B., Liu X., Cisloiu C., Chang K-M., High temperature moire interferometry investigation of creep crack growth of Inconel 783/environment and β-phase effects. Materials Science and Engineering: A, 2003, Vol. 347(1-2), 205-213.
Ma L., Chang K-M., Effects of different metallurgical processing on microstructures and mechanical properties of Inconel alloy 783. Journal of Materials Engineering and Performance, 2004, Vol. 13(1), 32-38.
Haynes International. http://www.haynes.ch/doc/HASTELLOY_X.pdf (access date 08.05.2019),
Baranowski J., Breliński J., Boretius M., Lutowanie części szczególnie odpowiedzialnych spoiwem AMS4777 (BNi-2). Welding Technology Review, 2007, Vol. 79(9), 22-25.
Prince & Izant Company. https://pi.rifdigital.com/uploads/Tech_Data_Sheets/Nickel_Tech_Data_Sheets/AMS_ 4777_BNi-2_TDS.pdf (access date 08.05.2019).
American Welding Society (AWS) C3 Committee on Brazing and Soldering. Brazing Handbook, 5th ed.; American Welding Society: Miami FL, United States of America, 2007, 164.