Phase transformations and structural changes in the course of the high-temperature superplastic deformation of aluminum alloys |
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| Authors: | V V Bryukhovetskii V P Poyda A V Poyda R I Kuznetsova Kaafarani Ali Mahmoud D E Pedun |
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| Affiliation: | 1.Institute of Electrophysics and Radiation Technologies,National Academy of Sciences of the Ukraine,Kharkov,Ukraine;2.Kharkov National University,Kharkov,Ukraine;3.Beirut Arab University,Tarik El-Jadidah, Beirut,Lebanon |
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| Abstract: | Phase and structural transformations, which develop under conditions characteristic of high-temperature superplasticity in
matrix multicomponent aluminum alloys, have been investigated. It has been shown that the appearance of a metastable liquid
phase is in principle possible in the structure of such alloys in the process of the establishment of the equilibrium state
during their heating to the temperature of tests and in the course of superplastic deformation. The characteristic properties
of the structural changes that occur in the course of the superplastic deformation of such alloys have been studied. The basic
conditions that lead to the origin and the development of fibrous species in the course of the high-temperature superplastic
deformation have been determined. The determining role of magnesium in the process of origin and development of such fibrous
formations is shown. |
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