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Characterizing Microstructural and Mechanical Properties of Al–Zn Alloys Processed by High‐Pressure Torsion
Author(s) -
Chinh Nguyen Q.,
Szommer Péter,
Gubicza Jenő,
El-Tahawy Moustafa,
Bobruk Elena V.,
Murashkin Maxim Yu.,
Valiev Ruslan Z.
Publication year - 2020
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201900672
Subject(s) - materials science , torsion (gastropod) , severe plastic deformation , microstructure , metallurgy , softening , grain boundary sliding , grain boundary , grain size , ductility (earth science) , composite material , medicine , creep , surgery
Herein, the characterization of microstructures and mechanical properties of Al–Zn alloys ultrafine‐grained (UFG) by using high pressure torsion (HPT) is surveyed. Emphasis is placed on the decomposition of the solid solution structures due to the HPT process, leading to unique mechanical and plastic properties of the UFG alloys. The decomposed microstructures, the grain boundaries wetted by Zn‐rich layers, as well as the softening, grain boundary sliding (GBS) with usually high strain rate sensitivity and super‐ductility of the HPT‐processed samples are described and discussed. Furthermore, the innovation potential of intensive GBS at room temperature is briefly considered.