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Experimental Evidence for Grain‐Boundary Sliding in Ultrafine‐Grained Aluminum Processed by Severe Plastic Deformation
Author(s) -
Chinh N. Q.,
Szommer P.,
Horita Z.,
Langdon T. G.
Publication year - 2006
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200501232
Subject(s) - materials science , severe plastic deformation , indentation , pressing , aluminium , grain boundary , grain boundary sliding , metallurgy , friction stir processing , composite material , microstructure
Evidence for grain boundary sliding in ultrafine‐grained aluminum after processing with equal channel angular pressing (ECAP) is presented (see Figure). Pure aluminum is used as a model material; depth sensing indentation testing and atomic force microscopy are used to measure the nature of the displacements around indentations for samples in an annealed and work‐hardened condition, and after processing using ECAP.