TPWJ, 2021, #6, 12-18 pages
Welding dissimilar high-strength nickel alloys in poly- and single-crystal combinations
K.A. Yushchenko, B.O. Zaderii, I.S. Gakh and G.V. Zviagintseva
E.O. Paton Electric Welding Institute of the NAS of Ukraine
11 Kazymyr Malevych Str., 03150, Kyiv, Ukraine. E-mail: email@example.com
The paper deals with an important question, which arises at designing and improvement of the structure of gas turbine
engines, in order to increase the operating parameters, cost characteristics and competitiveness: welding of dissimilar,
multistructural 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 °C by different technology schemes are determined. 15 Ref., 5 Table, 7 Figures.
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-turbine 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. et al.
(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 welding 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.
Advertising in this issue: