The Paton Welding Journal, 2011, №03



2011 №03 (11)

2011 №03 (02)

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The Paton Welding Journal, 2011, #3, 2-6 pages  

DIFFUSION BONDING OF γ-TiAl BASE ALLOY IN VACUUM BY USING NANOLAYERED INTERLAYERS

G.K. KHARCHENKO, A.I. USTINOV, Yu.V. FALCHENKO, A.N. MURAVEJNIK, T.V. MELNICHENKO and L.V. PETRUSHINETS

E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
 
 
Abstract
The effect of nanolayered interlayers Ti/Al, Ni/Ti and Ni/Al on structure of the diffusion bonds made in vacuum on γ-TiAl base alloy was studied. It is shown that when using the nanolayered interlayers of a composition differing from that of the base alloy it is necessary to conduct homogenising annealing to lower the degree of chemical heterogeneity in the bonding zone.
 
 
Keywords: diffusion bonding in vacuum, intermetallic titanium-aluminium alloy based on γ-TiAl, nanolayered interlayer, homogenising annealing, joint, heterogeneity, structure, microhardness
 
 
Received:                ??.??.??
Published:               28.03.11
 
 
References
1. Duarte, L.I., Ramos, A.S., Vieira, M.F. et al. (2006) Solidstate diffusion bonding of γ-TiAl alloys using Ti/Al thin films as interlayers. Intermetallics, 14, 1151-1156.
2. Ramos, A.S., Vieira, M.T., Duarte, L.I. et al. (2006) Nanometric multilayers: a new approach for joining TiAl. Ibid., 1157-1162.
3. Ustinov, A.I., Falchenko, Yu.V., Ishchenko, A.Ya. et al. (2009) Producing permanent joints of γ-TiAl based alloys using nanolayered Ti/Al interlayer by vacuum diffusion welding. The Paton Welding J., 1, 12-15.
4. Ustinov, A.I., Olikhovskaya, L.A., Polishchuk, S.S. (2006) Metastable nanostructural states in coatings of Ni-Al, made by vapor phase deposition. Metallofizika i Nov. Tekhnologii, 6, 32-37.
5. Ustinov, A.I., Olikhovskaya, L.A., Melnichenko, T.V. et al. (2008) Solid-phase reactions in heating of multilayer foils Al/Ti made by electron-beam deposition method. Sovremen. Elektrometallurgiya, 2, 21-28.
6. Romankov, S.E., Volkova, T.V., Melikhov, V.D. (2002) Phase-structural transformations of alloy Ti-48 % Al-2 % Nb in artificial ageing. Fizika Metallov i Metallovedenie, 93(4), 50-61.
7. Kharchenko, G.K., Mazanko, V.F., Ustinov, A.I. et al. (2009) Studies of diffusion processes in welded joints of titanium aluminide (TiAl). Visnyk Ch. DTI. Series Tekhn. Nauky, 37, 117-119.

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Suggested Citation

G.K. KHARCHENKO, A.I. USTINOV, Yu.V. FALCHENKO, A.N. MURAVEJNIK, T.V. MELNICHENKO and L.V. PETRUSHINETS (2011) DIFFUSION BONDING OF γ-TiAl BASE ALLOY IN VACUUM BY USING NANOLAYERED INTERLAYERS. The Paton Welding J., 03, 2-6.

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