Phase Composition Formation in a V-1469 Alloy (Al–Cu–Li System) during Friction Stir Welding
- Authors: Betsofen S.Y.1, Sbitneva S.V.2, Panteleev M.D.2, Bakradze M.M.2, Gordeeva M.I.1, Knyazeva Y.A.1
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Affiliations:
- National Research University Moscow Aviation Institute
- All-Russia Institute of Aviation Materials VIAM
- Issue: Vol 2018, No 11 (2018)
- Pages: 1059-1066
- Section: Article
- URL: https://journals.rcsi.science/0036-0295/article/view/172710
- DOI: https://doi.org/10.1134/S0036029518110046
- ID: 172710
Cite item
Abstract
The morphology of the intermetallic phases and their contents in the welded joint zones of a V‑1469 alloy (Al–Cu–Li system) are studied by X-ray diffraction and transmission electron microscopy. Welding is shown to change the phase composition, the crystallographic texture, and the microhardness of the alloy. According to quantitative X-ray diffraction analysis, the T1-phase content decreases and the δ'-phase content increases in the weld metal. As a result, the microhardness in the weld zone decreases, since the T1 phase is much stronger hardener than the δ' phase. This effect weakens when the weld root is approached.
About the authors
S. Ya. Betsofen
National Research University Moscow Aviation Institute
Author for correspondence.
Email: s.betsofen@gmail.com
Russian Federation, Moscow, 125993
S. V. Sbitneva
All-Russia Institute of Aviation Materials VIAM
Email: s.betsofen@gmail.com
Russian Federation, Moscow, 105005
M. D. Panteleev
All-Russia Institute of Aviation Materials VIAM
Email: s.betsofen@gmail.com
Russian Federation, Moscow, 105005
M. M. Bakradze
All-Russia Institute of Aviation Materials VIAM
Email: s.betsofen@gmail.com
Russian Federation, Moscow, 105005
M. I. Gordeeva
National Research University Moscow Aviation Institute
Email: s.betsofen@gmail.com
Russian Federation, Moscow, 125993
Yu. A. Knyazeva
National Research University Moscow Aviation Institute
Email: s.betsofen@gmail.com
Russian Federation, Moscow, 125993
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