Formation of Gradient Structures in the Zone of Joining a Deformable Nickel Alloy and a Single-Crystal Intermetallic Alloy during Thermodiffusion Pressure Welding and Subsequent Heat Treatment
- Authors: Povarova K.B.1, Valitov V.A.2, Drozdov A.A.1, Bazyleva O.A.3, Galieva E.V.2, Arginbaeva E.G.3
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Affiliations:
- Baikov Institute of Metallurgy and Materials Science
- Institute for Metals Superplasticity Problems
- All-Russia Research Institute of Aviation Materials (VIAM)
- Issue: Vol 2018, No 1 (2018)
- Pages: 42-50
- Section: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/172191
- DOI: https://doi.org/10.1134/S0036029518010111
- ID: 172191
Cite item
Abstract
The possibility of formation of a high-quality solid-phase joint of an Ni3Al-based single-crystal intermetallic VKNA-25 blade alloy with a high-temperature deformable EP975 disk alloy by pressure welding is studied to create high-performance one-piece blisk unit for the next-generation aviation gas turbine engines and to decrease the unit mass. The influence of the conditions of thermodiffusion pressure welding under the hightemperature superplasticity of the disk alloy and the influence of heat treatment of welded joints on the gradient structures in the welded joint zone and the structure at the periphery of the welded samples are investigated.
About the authors
K. B. Povarova
Baikov Institute of Metallurgy and Materials Science
Author for correspondence.
Email: povarova@imet.ac.ru
Russian Federation, Leninskii pr. 49, Moscow, 119991
V. A. Valitov
Institute for Metals Superplasticity Problems
Email: povarova@imet.ac.ru
Russian Federation, ul. Khalturina 39, Ufa, 450001
A. A. Drozdov
Baikov Institute of Metallurgy and Materials Science
Email: povarova@imet.ac.ru
Russian Federation, Leninskii pr. 49, Moscow, 119991
O. A. Bazyleva
All-Russia Research Institute of Aviation Materials (VIAM)
Email: povarova@imet.ac.ru
Russian Federation, ul. Radio 17, Moscow, 105005
E. V. Galieva
Institute for Metals Superplasticity Problems
Email: povarova@imet.ac.ru
Russian Federation, ul. Khalturina 39, Ufa, 450001
E. G. Arginbaeva
All-Russia Research Institute of Aviation Materials (VIAM)
Email: povarova@imet.ac.ru
Russian Federation, ul. Radio 17, Moscow, 105005