The changes in phase composition of the subsurface layer of an ultrafine-grained Al–Mg–Li alloy during its deformation under superplasticity conditions

The changes in structure and phase composition of an ultrafine-grained aluminum alloy produced by severe plastic deformation are investigated in the course of its tensile deformation under superplasticity conditions. It is demonstrated that under these conditions, the phase transformations due to de...

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Bibliographic Details
Published inRussian physics journal Vol. 56; no. 9; pp. 1018 - 1024
Main Authors Naydenkin, E. V., Ivanov, K. V.
Format Journal Article
LanguageEnglish
Published Boston Springer US 01.01.2014
Springer
Subjects
Alloys
Condensed Matter Physics
Condensed-State Physics
Hadrons
Heavy Ions
Lasers
Mathematical and Computational Physics
Nuclear Physics
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Specialty metals industry
Theoretical
subsurface layer
ultrafine-grained structure
phase transformations
severe plastic deformation
aluminum alloy
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Summary:The changes in structure and phase composition of an ultrafine-grained aluminum alloy produced by severe plastic deformation are investigated in the course of its tensile deformation under superplasticity conditions. It is demonstrated that under these conditions, the phase transformations due to decomposition of the solid solution are accelerated in the subsurface layer as a result of fast evolution of grain-boundary sliding. Using the grazing beam technique, it is found out that the largest changes in the structural-phase state occur within the ~10 μm subsurface layer.
ISSN:1064-8887
1573-9228
DOI:10.1007/s11182-014-0134-9