Pseudopartial Wetting of Grain Boundaries in Severely Deformed Al–Zn Alloys
https://doi.org/10.17073/0021-3438-2014-6-44-50
Abstract
Al–Zn alloys after the intense plastic deformation by the high-pressure torsion method have three various classes of grain boundaries (GBs) Al/Al wetted with a second zinc-enriched phase. Completely wetted Al/Al GBs are coated with a layer of the zinc-enriched phase thicker than 30 nm. Partially (incompletely) wetted Al/Al GBs contact with particles of the zinc-enriched phase with a contact angle >60° but contain no any measurable zinc concentration. Pseudopartially wetted Al/Al GBs also contact with Zn particles with a contact angle >60°. However, they have a thin interlayer of the zinc-enriched phase with a uniform thickness of 2–4 nm, the presence of which explains the unusually high plasticity of the Al–Zn alloys after highpressure torsion.
About the Authors
B. B. StraumalRussian Federation
A. A. Mazilkin
Russian Federation
X. Sauvage
France
R. Z. Valiev
Russian Federation
A. B. Straumal
Russian Federation
A. M. Gusak
Ukraine
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Review
For citations:
Straumal B.B., Mazilkin A.A., Sauvage X., Valiev R.Z., Straumal A.B., Gusak A.M. Pseudopartial Wetting of Grain Boundaries in Severely Deformed Al–Zn Alloys. Izvestiya. Non-Ferrous Metallurgy. 2014;(6):44-50. (In Russ.) https://doi.org/10.17073/0021-3438-2014-6-44-50