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The Effect of Thermodeformation Treatment on the Structure and Strengthening of the Al–7.1% Zn–2.8% Mg–1.4% Ni–1.1% Fe Alloy Produced via Casting in an Electromagnetic Crystallizer

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Abstract

A calculation technique (Thermo-Calc software code) and experimental methods (scanning and transmission electron microscopy and X-ray spectral analysis) have been used to study the effect of thermodeformation treatment on the structure and strengthening of the Al–7.1% Zn–2.8% Mg–1.4% Ni–1.1% Fe alloy produced via casting in an electromagnetic crystallizer (EMC). It has been shown that at a cooling rate higher than 103 K/s, the entire amount of iron, which exceeds its content in the grade AZ6NF alloy (GOST 4784–2019) by two times, is bound into eutectic inclusions of the Al9FeNi phase of a submicron size. The combination of high hardness (more than 190 HV) and ductility indicates the advantages of applying the EMC technology to this alloy.

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Funding

This work was supported by the Russian Science Foundation (project no. 22-19-00128, https://rscf.ru/project/22-19-00128/, Siberian Federal University).

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Authors and Affiliations

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

    N. A. Belov, S. O. Cherkasov & A. F. Musin

  2. Siberian Federal University, 660041, Krasnoyarsk, Russia

    V. N. Timofeev & M. M. Motkov

Authors
  1. N. A. Belov
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  2. V. N. Timofeev
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  3. S. O. Cherkasov
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  4. M. M. Motkov
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  5. A. F. Musin
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Correspondence to N. A. Belov.

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Translated by N. Podymova

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Belov, N.A., Timofeev, V.N., Cherkasov, S.O. et al. The Effect of Thermodeformation Treatment on the Structure and Strengthening of the Al–7.1% Zn–2.8% Mg–1.4% Ni–1.1% Fe Alloy Produced via Casting in an Electromagnetic Crystallizer. Phys. Metals Metallogr. 124, 414–421 (2023). https://doi.org/10.1134/S0031918X23600306

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