Metals

Behavior of magnesium alloy Mg-9Gd-4Y-1Zn-0.5Zr in the wide range of strain rate

S. A. Atroshenko^ab, M. N. Antonova^ab, S. Zhao^b, L. Xu^b, R. V. Lukashov^b, Yu. V. Petrov<sup>ab

a</sup> Institute of Problems of Mechanical Engineering, Russian Academy of Sciences, St. Petersburg
^b Saint Petersburg State University

Abstract: In this paper, we study the magnesium alloy Mg-9Gd-4Y-1Zn-0.5Zr (wt.%), which was obtained by direct die casting with cooling and subsequent homogenization at 510$^\circ$C for 12 h and quenching in water. Then, the alloy was extruded at 350$^\circ$C with an extrusion ratio of 10 and a plunger speed of 1 mm/s. Static tests of the alloy were performed on an Instron machine at two strain rates: 10$^{-3}$ and 10$^{-1}$ s$^{-1}$. Dynamic studies were carried out using the Taylor and Hopkinson methods. An analysis of changes in the characteristics and microstructure of this alloy was carried out in the strain rate range covering both static and dynamic loading rates. Micromechanisms of deformation and fracture of the magnesium alloy were identified.

Keywords: magnesium alloy, static and dynamic loading, micromechanisms of deformation and fracture.

Received: 23.09.2025
Revised: 17.10.2025
Accepted: 17.10.2025

DOI: 10.61011/FTT.2025.10.61957.261-25

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