Structure and Properties of the Solid-Phase Joints of a Wrought EP975 Nickel Alloy and a Single-Crystal Intermetallic VKNA-25 Alloy Formed by Pressure Welding at a Strain of 24% under the Superplasticity of the EP975 Alloy
- Authors: Galieva E.V.1, Povarova K.B.2, Drozdov A.A.2,3, Valitov V.A.1
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Affiliations:
- Institute for Metals Superplasticity Problems, Russian Academy of Sciences
- Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
- Bardin Central Research Institute of Ferrous Metallurgy
- Issue: Vol 2018, No 11 (2018)
- Pages: 1067-1073
- Section: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/172717
- DOI: https://doi.org/10.1134/S003602951811006X
- ID: 172717
Cite item
Abstract
Experiments on solid-phase pressure welding (PW) of a wrought EP975 nickel superalloy with a Ni3Al-based VKNA-25mono intermetallic alloy in a single-crystal state are performed under the superplasticity of the EP975 alloy, where its deformation was 24%. The structure and the phase composition of the interaction zone that forms between the materials to be joined after PW and PW followed by heat treatment are studied. The mechanical properties of the welded samples with a solid-phase joint are investigated. The ultimate tensile strength of the welded samples is shown to be 0.76 of the strength of the VKNA-25 alloy.
About the authors
E. V. Galieva
Institute for Metals Superplasticity Problems, Russian Academy of Sciences
Author for correspondence.
Email: galieva_elvina_v@mail.ru
Russian Federation, Ufa, 450001
K. B. Povarova
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences
Email: galieva_elvina_v@mail.ru
Russian Federation, Moscow, 119334
A. A. Drozdov
Baikov Institute of Metallurgy and Materials Science, Russian Academy of Sciences; Bardin Central Research Institute of Ferrous Metallurgy
Email: galieva_elvina_v@mail.ru
Russian Federation, Moscow, 119334; Moscow, 105005
V. A. Valitov
Institute for Metals Superplasticity Problems, Russian Academy of Sciences
Email: galieva_elvina_v@mail.ru
Russian Federation, Ufa, 450001