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FORMATION OF STRUCTURE OF THE ALUMINUM ALLOY BASED ON AL-ZN-MG-NI-FE SYSTEM DURING THERMOMECHANICAL TREATMENT

1 SHURKIN Pavel
Co-authors:
1 BELOV Nikolay 1 AKOPYAN Torgom 1 ALESCHENKO Alexander 1 GALKIN Sergey
Institution:
1 National University of Science and Technology, MISiS, Department of Metal Forming, Moscow, Russian Federation, e-mail: pa.shurkin@yandex.ru
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
1917-1923
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
338 views / 160 downloads
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Abstract

This work investigates the formation of the structure of high-strength aluminum alloy based on an Al-Zn-Mg-Ni-Fe system with an iron content of more than 0.5 wt.% during thermomechanical treatment including hot and cold longitudinal rolling with a reduction ratio of 40 and radial-shear rolling with a reduction ratio of 8.16. Microstructural investigations showed that iron and nickel are joined into the eutectic Al9FeNi phase at all stages, and the non-equilibrium T phase has no influence on technological plasticity. A hardness measure showed significant strengthening after rolling and precipitation ageing in mode Т6 and T4.

Keywords: High-strength aluminum alloys, thermomechanical treatment, microstructure, hardness

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