Institute of New Materials and Technologies of the Ural Federal University named after the first President of Russia B.N.Yeltsin (Yekaterinburg, Russia)¹ ; Institute of Engineering Science named after E. S. Gorkunov of the Ural Branch of Russian Academy of Sciences (Yekaterinburg, Russia)²

D. R. Salikhianov*, Associate Professor of the Department of Metals Pressure Treatment¹, Researcher of the Sector of New Materials and Technologies², Candidate of Technical Sciences, d.r.salikhianov@urfu.ru
Е. I. Salikhianova, Associate Professor of the Department of Metals Pressure Treatment¹, Researcher of the Youth Laboratory of Materials Technology², Candidate of Technical Sciences

JSC Kamensk-Uralsky Metallurgical Works (Kamensk-Uralsky, Russia)
А. V. Razinkin, Director of Technology, Candidate of Technical Sciences
Т. V. Мaltseva, Deputy Director of Technology, Candidate of Technical Sciences
B. V. Оvsyannikov, Academic Secretary, Candidate of Technical Sciences

*Corresponding author

The paper presents the results of an investigation into the deformation resistance of the 1420 aluminum-lithium alloy in both cast and wrought conditions over a wide range of rates (0.01-1 s^–1) and within the hot treatment temperature range of 360–400 °C. Flow curves were obtained under compression using the plastometric unit of the Institute of Engineering Science, Ural Branch of the Russian Academy of Sciences at strain rates of 0.1-1 s^–1, and under tension using a Test Systems universal testing unit at strain rates of 0.01-0.1 s^–1. The effects of temperature, strain, and strain rate on the deformation resistance of the 1420 alloy in both structural conditions were analyzed. To evaluate the influence of the testing method, the flow curves obtained under compression and tension at a strain rate of 0.1 s^–1 were compared. For a proper comparison of the deformation resistance curves, the friction factor was determined, and the compression flow curves were corrected to compensate for frictional losses. The observed differences were attributed to the effect of the stress state on the deformation behavior of the alloy. The influence of the initial condition of the 1420 alloy (cast and wrought) on deformation resistance and ductility was also evaluated. It was established that the alloy structure has a significant effect on both the flow curves and the ductility.
This work was financially supported by the Ministry of Science and Higher Education of the Russian Federation (Project No. FEUZ-2026-0013).

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