Avtomaticheskaya Svarka (Automatic Welding), #6, 2021, pp. 13-20
Welding dissimilar high-strength nickel alloys in poly- and single-crystal combinations
K.A. Yushchenko, B.O. Zaderii, I.S. Gakh, G.V. Zvyagintseva
E.O. Paton Electric Welding Institute. 11 Kazymyr Malevych Str., 03150 Kyiv, Ukraine. E-mail: firstname.lastname@example.org
The paper deals with an important question which arises at designing and improvement of the structures of gas turbine engines,
in order to increase the operating parameters, cost characteristics and competitiveness – welding of dissimilar, multi-structural
high-temperature materials. Weldability assessment by the criteria of strength and crack resistance was performed. The
main questions, arising in welding high-temperature nickel alloys in dissimilar combinations: welding method, features of
weld formation, chemical composition and structure, cracking susceptibility of welded joints and mechanical properties, are
considered in the case of welding typical high-temperature materials widely used in aircraft engine building, namely EI698VD
and ZhS26VI alloys with polycrystal and single-crystal structure, respectively. Methods to control the technological strength are
established. Mechanical properties of welded joints produced in the temperature range of 20…1000 °С by different technology
schemes, are determined. 15 Ref., 5 Tabl., 7 Fig.
high-temperature nickel alloys, welding of dissimilar alloys, weld formation, chemical composition, single-crystal
and polycrystal structure, crack resistance, properties.
1. Bratukhin, A.G. (2001) Modern aviation materials, technological
and functional peculiarities. Moscow, AviaTekhInform
21st century [in Russian].
2. Sims, C., Stollof, N., Hagel, W. (1995) Superalloys II.
Heat-resistant materials for aerospace and industrial power
plants. Ed. by R.E. Shalin. Moscow, Metallurgiya [in Russian].
3. Stroganov, G.B., Chepkin, V.M. (2000) Cast heat-resistant
alloys for gas turbines. Moscow, MATI [in Russian].
4. Morochko, V.P., Sorokin, L.I., Zybko, N.Yu. (1980) Weldability
classification of high-temperature nickel alloys in
EBM. Avtomatich. Svarka, 12, 42–44 [in Russian].
5. Sorokin, L.I. (2003) Evaluation of cracking resistance in
welding and heat treatment of high-temperature nickel alloys
(Review). Svarochn. Proizvodstvo, 7, 11–18 [in Russian].
6. XF9-1, the world’s best standards fighter engine, has been
completed. Japan’s Military Technology, Interview with the
Developer (Pt. 1/2). BLOGOS (in Japanese). Retrieved 31
7. Kopelev, S.Z., Galkin, M.N., Kharin, A.A., Shevchenko, I.V.
(1993) Thermal and hydraulic characteristics of cooled gas
turbine blades. Moscow, Mashinostroenie [in Russian].
8. Bazileva, O.A., Arginbaeva, E.G., Turenko, E.O. (2012)
Heat-resistant cast intermetallic alloys. In: Aviation Materials
and Technologies. Moscow, VIAM, 57-60 [in Russian].
9. Kablov, E.N. (2001) Cast blades of gas-turbines engines (alloys,
technology, coatings). Moscow, MISIS [in Russian].
10. Sorokin, L.I. (1999) Stresses and cracks in welding and heat
treatment of high-temperature nickel alloys. Svarochn. Proizvodstvo,
2, 11–17 [in Russian].
11. Yushchenko, K.A., Zadery, B.A., Zvyagintseva, A.V. et al.
(2008) Sensitivity to cracking and structural changes in EBW
of single crystals of heat-resistant nickel alloys. The Paton
Welding J., 2, 6-13.
12. Yushchenko, K.A., Zadery, B.A., Karasevskaya, O.P. (2006)
Structural changes during welding process of single crystals
of nickel supealloys in crystallographically asymmetric
location of welding pool. Novejshie Tekhnologii, 28(11),
1509–1527 [in Russian].
13. Bychkov, V.M., Selivanov, A.S., Medvedev, A.Yu. et al.
(2012) Investigation of weldability of high-temperature
nickel alloy EP742 by linear friction method. Vestnik
UGATU, 16(7), 52, 112–116.
14. Wiednig C. (2014) Dissimilar electron beam welding of nickel base alloy 625 and 9 % Cr steel. Procedia Engineering, 86, 184-194. https://core.ac.uk/download/pdf/82415005.pdf https://doi.org/10.1016/j.proeng.2014.11.027
15. Lippold, J.C., Cotecki, D.J. (2005) Welding metallurgy
and weldability of stainless steels. Wiley interscience. A
J.Wiley@sons inc. Publ.
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