THE INFLUENCE OF INTERRUPTING THE BRAZING PROCESS OF HASTELLOY X SUPERALLOY ON THE PROPERTIES OF THE JOINT

In this paper, disruption of brazing process impact on behavior of filler metal and properties of the joint was investigated. Hastelloy X sheet samples were brazed using Ni-13Cr-4Fe-4Si-2,7B filler alloy. Two identical sets of samples were heated in high vacuum, once load reached specified temperature process was interrupted. Subsequently, one set of samples was tested and second set was subjected to rebrazing in proper time and temperature, dedicated for used filler material. Disruption of the process in following temperature was analyzed: 930, 960, 1050, 1127, 1145, 1170°C. After both processes macroscopic observations of joint, peel test, static tensile test and spreadability analysis were carried out.

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1. Haynes International, http://haynesintl.com/docs/default-source/pdfs/new-alloy-brochures/high-temperature-alloys/brochures/x-brochure.pdf?sfvrsn=15b829d4_38, Access date: 02.12.2019.
2. Dul I.: Application and processing of nickel alloys in the aviation industry, Welding International, 27:1, 48-56.
3. Romero-Jabalquinto, et al.: Feasibility of manufacturing combustion chambers for aeronautical use in Mexico. Journal of Applied Research and Technology 14 (2016), 167-172.
4. Sporer D., Fortuna D.: Selecting materials for brazing a honeycomb in turbine engines. Welding Journal 2014, Vol. 93(2), 44-48,
5. American Welding Society (AWS) C3 Committee on Brazing and Soldering. Brazing Handbook, 5th ed. American Welding Society: 550 N. W. LeJeune Road, Miami, FL33126, United States of America, 2007; pp. 164.
6. Elrefaey A.: High-temperature brazing in aerospace engineering. Woodhead Publishing Series in Welding and Other Joining Technologies 2012, Pages 345-383.
7. https://www.oerlikon.com/ecomaXL/files/metco/oerlikon_DSM-0285.1_Amdry_915_ Series.pdf, Access date: 02.12.2019.
8. Ghasemi A., Pouranvari M.: Microstructural evolution mechanism during brazing of Hastelloy X superalloy using Ni–Si–B filler metal. Science and Technology of Welding and Joining 23 (2018), 441-448.
9. Ghasemi A., Pouranvari M.: Intermetallic phase formation during brazing of a nickel alloy using a Ni–Cr–Si–Fe–B quinary filler alloy. Science and Technology of Welding and Joining 24 (2019), 342-351.
10. Ulan kyzy, S., Völkl R., Munz O., Fischer T., Glatzel U.: The Effect of Brazing on Microstructure of Honeycomb Liner Material Hastelloy X. Journal of Materials Engineering and Performance 28 (2019), 1909-1913.