https://doi.org/10.1140/epjs/s11734-025-02118-5
Regular Article
Modifying capacity of the Al–Cu–Zr master alloy with the nucleating-phase Al2.5Cu0.5Zr
Vatolin Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences, Yekaterinburg, Russia
a
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Received:
13
November
2025
Accepted:
15
December
2025
Published online:
16
January
2026
This study examines the synthesis temperature and composition conditions of Al–Cu–Zr aluminides with a cubic L12-type lattice, where copper replaces 8–12% of aluminum. Copper stabilizes the cubic lattice of trialuminides, substituting up to 12 at.% Al. Aluminides with compositions (Al0.92Cu0.08)3Zr and (Al0.88Cu0.12)3Zr exhibit high crystallographic and structural similarity to the α-Al lattice. The alloy containing 36.28% Cu and 9.02% Zr forms metastable cubic-lattice aluminides, thermally stable at 850 °C. Additives of the complex Al-36.28%Cu-9.02%Zr master alloy grind aluminum grains two orders of magnitude finer than binary master alloys Al-2%Zr and Al-10%Cu with the same chemical composition.
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© The Author(s), under exclusive licence to EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature 2026
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
