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Microstructure Characterization of an Aluminium Alloy Processed by Milling Followed by Spark Plasma Sintering
Author(s) -
Charfeddine Saifeddine,
Zehani Karim,
Bessais Lotfi,
Korchef Atef
Publication year - 2018
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201700137
Subject(s) - spark plasma sintering , materials science , nanocrystalline material , microstructure , ball mill , metallurgy , alloy , transmission electron microscopy , grain size , scanning electron microscope , severe plastic deformation , aluminium , sintering , composite material , nanotechnology
In the present work, the microstructure and thermal stability of a commercial nanocrystalline aluminum alloy produced by combining equal channel angular pressing and ball milling followed by spark plasma sintering are characterized by X‐ray diffraction, optical microscopy, scanning electron microscopy and transmission electron microscopy. It is shown that the combination of different severe plastic deformation techniques, results to refining the grain size to a larger extent and improving the temperature range in which the grain size remains in the nanometer domain for temperatures as high as 400 °C. This broadens the scope of using the nanocrystalline aluminium alloy for high temperature industrial applications.