Investigations reveal enhanced corrosion resistance and mechanical properties linked to Sc:Zr ratio in Al-Mg alloys, suggesting optimal compositions may improve performance.
The results of studies of the microstructure and physical and mechanical properties (resistivity, microhardness) of cast and ultrafine-grained (UFG) Al-Mg alloys with different magnesium content (2.5, 4.0, 6.0% wt) and different Sc/Zr ratio (0.45–2.20) are presented. Cast alloys are obtained by induction casting, UFG microstructure in aluminum alloys is formed by equal-channel angular pressing. The effect of the temperature of 30-minute annealing on the microhardness and electrical resistivity of aluminum alloys is investigated. The temperature and time intervals of stability of solid solution and granular microstructure of aluminum alloys are determined. The effect of the Sc/Zr ratio on the composition of the released particles and the nature of the decomposition of the solid solution is analyzed.
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N.A. Kozlova (2025) studied this question.
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