Structural and Phase Transformations in Al–Li–Cu–Mg–Zr–Sc–Zn Alloy upon Storage after Megaplastic Deformation


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Abstract

Structural and phase transformations in a commercial multicomponent aluminum–lithium alloy have been studied electron-microscopically upon storage after mega-plastic deformation by high-pressure torsion. It has been shown that the arising deformation structure of the alloy is unstable, and upon subsequent storage at room temperature it is transformed via a complex reaction of in situ recrystallization and decomposition of the supersaturated solid solution. The character of the transformation is determined by the regime of the previous mega-plastic deformation and by the duration of the storage.

About the authors

L. I. Kaigorodova

MikheevInstitute of Metal Physics, Ural Branch, Russian Academy of Sciences

Email: dmitrijrasp@gmail.com
Russian Federation, Ekaterinburg, 620108

D. Yu. Rasposienko

MikheevInstitute of Metal Physics, Ural Branch, Russian Academy of Sciences; Ural Federal University Named after the First President of Russia B.N. Yeltsin

Author for correspondence.
Email: dmitrijrasp@gmail.com
Russian Federation, Ekaterinburg, 620108; Ekaterinburg, 620002

V. G. Pushin

MikheevInstitute of Metal Physics, Ural Branch, Russian Academy of Sciences; Ural Federal University Named after the First President of Russia B.N. Yeltsin

Email: dmitrijrasp@gmail.com
Russian Federation, Ekaterinburg, 620108; Ekaterinburg, 620002

V. P. Pilyugin

MikheevInstitute of Metal Physics, Ural Branch, Russian Academy of Sciences; Ural Federal University Named after the First President of Russia B.N. Yeltsin

Email: dmitrijrasp@gmail.com
Russian Federation, Ekaterinburg, 620108; Ekaterinburg, 620002

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