Issues »  Volume 39, Issue 10

Influence of the Size of Grain and Structural State of Boundaries of Grains on Parameters of Superplasticity of an Aluminium Alloy Al–Zn–Mg–Cu–Zr

A. V. Poyda$^{1}$, V. P. Poyda$^{2}$, V. V. Bryukhovetskyy$^{1}$, D. E. Myla$^{1}$, A. V. Zavdoveev$^{3}$

$^{1}$Institute of Electrophysics and Radiation Technologies NAS of Ukraine, 28 Chernyshevsky Str., 61002 Kharkiv, Ukraine
$^{2}$V.N. Karazin Kharkiv National University, 4 Svobody Sqr., 61022 Kharkiv, Ukraine
$^{3}$Donetsk Institute for Physics and Engineering Named after O.O. Galkin, NAS of Ukraine, 46 Nauky Ave., UA-03028 Kyiv, Ukraine

Received: 07.12.2016; final version - 17.09.2017. Download: PDF

To improve the characteristics of superplasticity of aluminium alloy of Al–Zn–Mg–Cu–Zr system, its thermomechanical treatment including rolling and annealing of the samples is performed. This makes it possible to create a submicrocrystalline homogeneous structure in the alloy instead of the bimodal structure, albeit with a predominant number of low-angle grain boundaries. However, this treatment allows to significantly increasing the characteristics of superplasticity of the alloy, in particular, the elongation to failure increased almost twice.

Key words: superplasticity, hot working, grain boundaries, structural anisotropy, fibres.

URL: http://mfint.imp.kiev.ua/en/abstract/v39/i10/1345.html

DOI: https://doi.org/10.15407/mfint.39.10.1345

PACS: 61.72.Ff, 61.72.Hh, 62.20.fq, 62.20.mm, 81.40.Lm, 81.70.Bt, 83.50.Uv

Citation: A. V. Poyda, V. P. Poyda, V. V. Bryukhovetskyy, D. E. Myla, and A. V. Zavdoveev, Influence of the Size of Grain and Structural State of Boundaries of Grains on Parameters of Superplasticity of an Aluminium Alloy Al–Zn–Mg–Cu–Zr, Metallofiz. Noveishie Tekhnol., 39, No. 10: 1345—1362 (2017) (in Ukrainian)

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