Changes in the structural and phase state of cold-formed semi-finished products from Al–Li-alloys after various low-temperature effects

Lukinа E.A., Naprienko S.A., Gorbovets M.A., Zaysev D.V., Oglodkova Yu.S.
UDC
620.1
DOI
10.18577/2307-6046-2023-0-1-39-49
Article PDF (Russian) (1.56 MB)
How to cite
Lukinа E.A., Naprienko S.A., Gorbovets M.A., Zaysev D.V., Oglodkova Yu.S. Changes in the structural and phase state of cold-formed semi-finished products from Al–Li-alloys after various low-temperature effects // Proceedings of VIAM. 2023. No. 1. DOI: 10.18577/2307-6046-2023-0-1-39-49. URL: https://test.viam.ru/en/journal/2023/1/4
Keywords
Al–Li-alloys, aging, heating, fracture, S1-phase, lattice period, mechanical properties, transmission electron microscopy, scanning electron microscopy
Abstract

The structure and phase composition of pressed semi-finished products from two batches of alloy 1420 in states after natural and artificial aging have been studied by x-ray diffraction analysis, optical and electron microscopy. The mechanical properties, dimensions and character of the separation of the hardening phases are determined, the values of the lattice periods of the matrix and the phase of the pressed profiles of alloy 1420 are analyzed. A comparative structural analysis was carried out with cold-rolled semi-finished products of alloy 1424 – after aging, as well as additional, long-term low-temperature heating.

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