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As part of the Priority-2030 strategic leadership program, Maxim Ozerov, PhD in Technical Sciences and a research fellow at the BelSU Laboratory of Three-Dimensional Nanostructured Materials, teamed up with Denis Klimenko, a PhD candidate from the Department of Materials Science and Nanotechnology. Together, they developed this cutting-edge alloy, which consists of 1% aluminum, 9% chromium, 35% niobium, 5% titanium, 40% vanadium, and 10% zirconium. Klimenko focused on this alloy during his dissertation research.

What sets the new alloy apart is its exceptional strength and plasticity. Remarkably, it maintains a high level of plasticity even at room temperature.

“The enhanced properties of our alloy position it as a highly sought-after material in both metallurgy and the aerospace sector,” said Ozerov.

The researchers emphasize that the new alloy’s impressive strength – both at room temperature and under elevated conditions – combined with its low density of less than 6 g/cm³, makes it an ideal candidate for structural components in the aerospace industry, such as external engine parts. Key findings reveal that the alloy achieves a yield strength of 1090 MPa and an ultimate strength of 1456 MPa, with a compressive strain before failure of 14.7% at room temperature. Even at 800 °C, it retains a yield strength of 920 MPa and a tensile strength of 1192 MPa, capable of enduring over 50% compressive strain.

Klimenko noted that the strength characteristics of this new alloy remain consistent across temperatures. Within the operational range up to 800 °C, the new alloy frequently outperforms traditional nickel alloys. In terms of specific strength and heat resistance, it rivals widely used nickel alloys while exceeding their performance in several key areas.

“Moreover, unlike nickel alloys, our proposed composition does not rely on costly rare earth metals for alloying, making it a more cost-effective solution,” Klimenko added.

The innovative process behind the new alloy involves producing ingots in a pure argon environment using high-purity elements (aluminum, chromium, niobium, titanium, vanadium, and zirconium) through vacuum arc remelting at an impressive temperature of 3500 °C. To ensure uniform distribution of elements, each ingot is remelted at least five times. The uniqueness and novelty of this high-entropy alloy are protected by patents from the Russian Federation.