Samara National Research University, Samara, Russia:

E. V. Aryshenskiy, Associate Professor at the Department of Metal Technology and Aviation Materials Engineering, Leader of Industry-Specific Research Laboratory No. 4, Doctor of Technical Sciences, e-mail: arishenskiy.ev@ssau.ru

Siberian State Industrial University, Novokuznetsk, Russia:

S. V. Konovalov, Vice Rector for Research and Innovation, Professor, Doctor of Technical Sciences, e-mail: konovalov@sibsiu.ru

Samara Metallurgical Plant JSC, Samara, Russia:

V. V. Yashin, Manager, Candidate of Technical Sciences, e-mail: Vasiliy.Yashin@samara-metallurg.ru

Institute of Strength Physics and Materials Science at the Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia:

I. Yu. Litovchenko, Head of Shape Memory Alloys Laboratory, Leader of the Shared Knowledge Centre NANOTEKh, Doctor of Physical and Mathematical Sciences, e-mail: litovchenko@spti.tsu.ru

This paper examines the texture of low-alloy alloy 8011 and the way it forms during its as-cast structure treatment. The process of texture forming during as-cast structure treatment differs from the processes observed at the later stages of thermomechanical treatment, and this needs further study. To understand how the texture tends to form, the authors used a laboratory mill for rolling specimens made of low-alloy aluminium alloys, which simulates a real industrial process. A comprehensive microstructural study was carried out for two deformation states, which involved optical microscopy for exa mining the grain microstructure, electron scanning microscopy for determining the number and sizes of intermetallics, an electron backscatter diffraction study for local microstructural analysis, and an X-ray texture analysis for determining the main crystallographic orientations. Thus, the authors established that, with the Zener-Hollomon parameter being high, the above alloy can experience recrystallization (including partial recrystallization in between deformation cycles) during as-cast structure treatment. Particle-stimulated nucleation serves as the principal nucleation mechanism. The poorly formed β-fiber texture, which makes the mechanism of oriented growth less efficient, impedes the forming of the cubic texture during recrystallization. Besides, due to the quickly developing rebound processes, only a small (compared with the second-phase particles) amount of subgrains is present in the grains at these stages. Therefore, the number of cube nuclei is also low. So, the texture that forms during as-cast structure treatment differs significantly from the one observed at the later stages of thermomechanical treatment.
Support for this research was provided under a grant of the Russian Science Foundation, Project 18-79-10099-П, https://rscf.ru/project/21-79-03041/.

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