Grain boundary films in Al–Zn alloys after high pressure torsion

In ultra-fine grained Al–Zn alloys after high pressure torsion Al/Al grain boundaries (GBs) completely, partially or pseudopartially wetted by Zn in the solid state have been observed using analytical and high resolution electron microscopy. In the latter case the solid Zn particles in the triple jo...

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Bibliographic Details
Published in:Scripta materialia 2014-01, Vol.70, p.59-62
Main Authors: Straumal, B.B., Sauvage, X., Baretzky, B., Mazilkin, A.A., Valiev, R.Z.
Format: Article
Language:English
Subjects:
Aluminum
Contact angle
Grain boundaries
High pressure torsion
High resolution electron microscopy
Mathematical analysis
Particle physics
Phase transformations
Severe plastic deformation
Torsion
Wetting
Zinc
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Summary:In ultra-fine grained Al–Zn alloys after high pressure torsion Al/Al grain boundaries (GBs) completely, partially or pseudopartially wetted by Zn in the solid state have been observed using analytical and high resolution electron microscopy. In the latter case the solid Zn particles in the triple joints form a non-zero contact angle θ=80–160° with Al/Al GBs. Simultaneously, a 2–10nm thick uniform Zn-rich layer is present in the Al/Al GBs.
ISSN:1359-6462
1872-8456
DOI:10.1016/j.scriptamat.2013.09.019