National Research Tomsk State University, Tomsk, Russia¹ ; Mari State University, Yoshkar-Ola, Russia²

N. I. Karakchieva, Senior Researcher at the Laboratory of Chemical Technologies¹, Senior Researcher at the Laboratory of Design and Manufacture of Ceramic Products for Microelectronics², Candidate of Chemical Sciences, e-mail: karakchieva@mail.tsu.ru

National Research Tomsk State University, Tomsk, Russia
V. D. Valikhov, Junior Researcher at the Laboratory of Nanotechnologies in Metallurgy, e-mail: valihov.snobls@yandex.ru
A. P. Khrustalev, Senior Researcher at the Laboratory of Nanotechnologies in Metallurgy, Candidate of Physical and Mathematical Sciences, e-mail: tofik0014@gmail.com

National Research Tomsk State University, Tomsk, Russia¹ ;  Institute of Problems of Chemical and Energy Technologies of the Siberian Branch of the Russian Academy of Sciences, Biysk, Russia²
V. I. Sachkov, Head of the Laboratory of Chemical Technologies¹, Senior Researcher², Doctor of Chemical Sciences, Associate Professor, e-mail: vicsachkov@mail.tsu.ru

This article presents the results of obtaining and studying the properties of Mg95 magnesium alloy modified with TiAlSc, TiAlZr, and TiAlDy alloying compositions. The article examines the application of modern technological modes for the production of alloys using unique alloying compositions which are produced employing hydride technology. Mg95-based alloys were obtained by casting into block mould in a special crucible under argon pressure to suppress the reactivity of magnesium. The effect of the alloying compositions is investigated by optical and electron microscopy, during tensile tests and by X-ray phase analysis. It is found that when TiAlDy alloying compositions is introduced, Mg95 alloy structure has a different grain morphology, typical for ingots with natural crystallization, with an average grain size of 432±25 μm. The effect on mechanical properties is characterized by an increase in elongation, in comparison with the initial Mg95 alloy. TiAlSc ligature reduces the proportion of unequiaxed grains in the alloy structure, but the grain size increases to 530±25 microns. The mechanical properties of Mg95 alloy, modified with scandium alloying compositions, are characterized by the highest relative elongation value among other alloys, which is equal to18 %. TiAlZr alloying composition reduces the average grain size of the alloy to 346±25 μm. It also increases the tensile strength of the alloy by 28 % compared with pure Mg95 alloy. The results show that there are good prospects for using TiAlSc, TiAlZr, and TiAlDy alloying compositions to produce magnesium alloys with enhanced physical and mechanical properties.

The work was carried out with the financial support of the Ministry of Education and Science of the Russian Federation as part of state assignment No. FSWM-2025-0010.

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