Automatic Welding, 2019, №08



2019 №08 (02)

DOI of Article 10.15407/as2019.08.03

2019 №08 (04)

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Avtomaticheskaya Svarka (Automatic Welding), #8, 2019, pp. 22-29

Investigation of interaction of Ni₃Al-based alloy with interlayers of different alloying systems for TLP-bonding

V.V. Kvasnytskyi¹, H.P. Myalnitsa², M.V. Matviienko³, E.A. Buturlya⁴, Dong Chunlin⁵

¹National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute». 37 Pobedy ave., Kyiv, 03056. E-mail:kvas69@ukr.net
²SE «Scientific-production gas turbine construction complex «Zorya»-«Mashproekt», 42a Oktyabrskii Ave, Mykolaiv, 54018
³Kherson Branch of National University of Shipbuilding named after Admiral Makarov, 44 Ushakova Ave, Kherson, 73022
⁴Admiral Makarov National University of Shipbuilding, 9 Geroev Ukraine Ave, Mykolaiv, 54025
⁵Guangdong Provincial Key Laboratory of Advanced Welding Technology, Guangdong Welding Institute (China-Ukraine E.O. Paton Institute of Welding), Guangzhou, 510650, China

Fusion welding of cast high-temperature nickel alloys with high content of strengthening disperse phases is problematic. Even more serious problem is welding of intermetallic-based materials. Therefore, different methods of brazing are widely used for such materials joining. TLP-bonding (Transient Liquid Phase Bonding) is a term which has the most often application abroad. Considering that brazing filler materials have lower melting temperature than base metal the concentration of depressants (reducing brazing filler metal melting temperature) in brazed weld shall be reduced to the minimum in order to increase working temperature of brazed joints in brazing process. The depressants of high-temperature brazing filler metals are divided on several groups. Interaction of Ni₃Al-based alloy with brazing filler metals containing boron, zirconium and hafnium was investigated in the work. SBM-3 brazing filler metal of Ni-Cr-Co-Al-Ti-Ta-Re-W-Mo-Hf-B system was developed based on research results. 19 Ref., 7 Fig.
Keywords: brazing, nickel alloys, strengthening phase, depressants, brazing filler metal development, melting temperature

Received: 14.06.2019
Published: 11.07.2019

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