The influence of homogenizing annealing regimes on the structural phase state and mechanical properties of aluminum-lithium alloy 1441 ingots

Antipov V.V., Tkachenko E.A., Zaysev D.V., Selivanov A.A., Ovsyannikov B.V.
UDC
669.715:669.884
DOI
10.18577/2307-6046-2019-0-3-44-52
Article PDF (Russian) (987.28 KB)
How to cite
Antipov V.V., Tkachenko E.A., Zaysev D.V., Selivanov A.A., Ovsyannikov B.V. The influence of homogenizing annealing regimes on the structural phase state and mechanical properties of aluminum-lithium alloy 1441 ingots // Proceedings of VIAM. 2019. No. 3. DOI: 10.18577/2307-6046-2019-0-3-44-52. URL: https://test.viam.ru/en/journal/2019/3/5
Keywords
Al–Li alloys, 1441 aluminum alloy, ingot structure, mechanical property, homogenizing annealing, technological plasticity, phase composition.
Abstract

The article presents the results of the study of the influence of temperature-time parameters of homogenization on the structure, phase composition and technological plasticity aluminum-lithium alloy 1441 ingots based on the Al–Li–Cu–Mg–Zr system. The phase composition of homogenized ingots was observed. In the structure of ingots after homogenization in different regimes, there are secondary microparticles of the phases: β¢ (Al3Zr), δ¢ (Al3Li) and S¢ (Al2CuMg). The particle size of these phases is from 5 to 50 nm. The two-stage homogenization regime was selected, and the temperature range of ingots hot rolling was specified, which are recommended for use in the production conditions of a modern metallurgical plant.

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