The effect of heat treatment on the structure and mechanical properties of joints, produced by electron beam welding of extrusions from aluminium-lithium alloy V-1469

Benarieb I., Panteleev M.D., Oglodkov M.S., Sbitneva S.V., Pahomkin S.I.
UDC
669.715:669.018.62
DOI
10.18577/2307-6046-2024-0-6-3-17
Article PDF (Russian) (1.7 MB)
How to cite
Benarieb I., Panteleev M.D., Oglodkov M.S., Sbitneva S.V., Pahomkin S.I. The effect of heat treatment on the structure and mechanical properties of joints, produced by electron beam welding of extrusions from aluminium-lithium alloy V-1469 // Proceedings of VIAM. 2024. No. 6. DOI: 10.18577/2307-6046-2024-0-6-3-17. URL: https://test.viam.ru/en/journal/2024/6/1
Keywords
aluminum-lithium alloys, Al–Cu–Li system, electron-beam welding, heat treatment, phase transformation, transmission electron microscopy, differential scanning calorimetry
Abstract

This paper presents the results of the study of the features of microstructure formation and changes in mechanical properties after heat treatment of welded joints, obtained by electron beam welding of extrusions from high-strength alloy V-1469 of Al–Cu–Li system. Phase transformations and nature of precipitation in different zones of the welded joint depending on heat treatment were studied by differential scanning calorimetry, transmission electron microscopy and thermodynamic simulation. It has been shown that the heat treatment of welded joints (quenching + aging) significantly increases the level of strength of the material.

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