Influence of Sc:Zr ratio on corrosion resistance of ultrafine-grained Al-Mg alloys. I. Investigation of structure and physical-mechanical properties

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Abstract

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.

About the authors

N. A. Kozlova

National Research Nizhny Novgorod State University named after N.I. Lobachevsky

Author for correspondence.
Email: nakozlova@nifti.unn.ru
Nizhny Novgorod

A. V. Nokhrin

National Research Nizhny Novgorod State University named after N.I. Lobachevsky

Email: nakozlova@nifti.unn.ru
Nizhny Novgorod

V. N. Chuvil'deev

National Research Nizhny Novgorod State University named after N.I. Lobachevsky

Email: nakozlova@nifti.unn.ru
Nizhny Novgorod

I. S. Shadrina

National Research Nizhny Novgorod State University named after N.I. Lobachevsky

Email: nakozlova@nifti.unn.ru
Nizhny Novgorod

A. A. Bobrov

National Research Nizhny Novgorod State University named after N.I. Lobachevsky

Email: nakozlova@nifti.unn.ru
Nizhny Novgorod

M. K. Chegurov

National Research Nizhny Novgorod State University named after N.I. Lobachevsky

Email: nakozlova@nifti.unn.ru
Nizhny Novgorod

V. I. Kopylov

National Research Nizhny Novgorod State University named after N.I. Lobachevsky

Email: nakozlova@nifti.unn.ru
Nizhny Novgorod

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