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Structure and Properties of Al–4.5Mg–0.15Zr Compositions Alloyed with Er, Y, and Yb

  • STRUCTURE, PHASE TRANSFORMATIONS, AND DIFFUSION
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Abstract

The structure and properties of the Al–4.5Mg–0.15Zr compositions additionally alloyed with Er, Y, and Yb are studied. During low-temperature annealing of the alloys, the precipitates of 3–5 nm in size with the L12 structure are formed. The recrystallization of cold-rolled sheets of the studied alloys starts at a temperature of ~300°С, when the hardness substantially decreases as compared to that of the rolled alloys, and the structure is almost completely recrystallized. During heating to 550°С, the stable recrystallized structure with a grain size of 11–13 µm remains in the alloys with Er and Yb, whereas, in the alloy with Y, the coarse-grained structure with an average grain size of 40 ± 7 µm is formed.

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Funding

The study was supported by the Russian Foundation for Basic Research, project no. 20-33-70170\19. The study was performed using equipment available in the Center of Collective Access for Materials Science and Metallurgy, which was supported by the Ministry of Science and Higher Education of the Russian Federation (no. 075-15-2021-696).

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Authors and Affiliations

  1. National University of Science and Technology MISiS, 119049, Moscow, Russia

    A. G. Mochugovskiy, R. Yu. Barkov, A. V. Mikhaylovskaya, I. S. Loginova, O. A. Yakovtseva & A. V. Pozdniakov

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  1. A. G. Mochugovskiy
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  2. R. Yu. Barkov
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Correspondence to R. Yu. Barkov.

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Translated by N. Kolchugina

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Mochugovskiy, A.G., Barkov, R.Y., Mikhaylovskaya, A.V. et al. Structure and Properties of Al–4.5Mg–0.15Zr Compositions Alloyed with Er, Y, and Yb. Phys. Metals Metallogr. 123, 466–473 (2022). https://doi.org/10.1134/S0031918X22050088

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