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Abstract
An experimental study and comparative analysis of the flow stress of aluminum-lithium alloy 1441 of the Al-Cu-Mg-Li system was performed by uniaxial compression and torsion tests using the Gleeble 3800 thermomechanical process simulator. The studies were carried out depending on strain, temperature and strain rate parameters (450-25 °С, 1…50 s^(-1)), corresponding to the processes of hot and cold rolling of sheets and strips under the conditions of PJSC KUMZ. It is shown that torsion testing is the most suitable method for obtaining experimental data on the flow stress of aluminum-lithium alloy 1441 in the high-temperature region of 450-300 °C at large equivalent (true) strains
(> 1.0), corresponding to hot rolling conditions. In turn, the uniaxial compression test is the most suitable method for obtaining experimental data on the flow stress in the region corresponding to cold rolling conditions. The experimental curves of flow stress presented in the work can be used in specialized engineering programs of computer modeling for improving and optimizing technological schedules of hot and cold rolling of sheets and strips from aluminum-lithium alloy 1441.
Keywords:
aluminum-lithium alloy 1441, Gleeble 3800, uniaxial compression, torsion, flow stress, comparative analysis
Pesin Alexander M. – Doctor of Technical Sciences, professor, professor of the Department of Materials
Processing Technologies, Deputy Head of the Zhilyaev laboratory “Mechanics of Gradient Nanomaterials", Nosov Magnitogorsk State Technical University Nosov Magnitogorsk State Technical University, Magnitogorsk, Russia.
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Razinkin Alexander V. – Candidate of Technical Sciences, director of Production, PJSC "Kamensk-Uralsky Metallurgical Plant", Kamensk-Uralsky, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Zamaraev Vladimir A. – Engineer, PJSC "Kamensk-Uralsky Metallurgical Plant", Kamensk-Uralsky, Russia.
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Dymshakova Elena G. – Head of the central plant laboratory, PJSC "Kamensk-Uralsky Metallurgical Plant", Kamensk-Uralsky, Russia.
Zamaraeva Yulia V. – Candidate of Technical Sciences, Research Fellow, M.N. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences, Yekaterinburg, Russia; PJSC "Kamensk-Uralsky
Metallurgical Plant", Kamensk-Uralsky, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Pustovoitov Denis O. – Candidate of Technical Sciences, Associate Professor, Associate Professor of the
Department of Materials Processing Technologies, Senior Research Fellow of the Zhilyaev laboratory “Mechanics of Gradient Nanomaterials", Nosov Magnitogorsk State Technical University Nosov Magnitogorsk State Technical
University, Magnitogorsk, Russia. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
