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Browse Journals & Magazines > Applied Physics Letters ...> Volume:90 Issue:8 Help

High density hexagonal and rhombic shaped nanostructures in a fcc aluminum alloy induced by severe plastic deformation at room temperature

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2 Author(s)
Liu, M.P. ; Department of Materials Science and Engineering, Norwegian University of Science and Technology (NTNU), Alfred Getz vei 2b, 7491 Trondheim, Norway ; Roven, H.J.
 nm have been observed in a commercial Al–Mg–Si alloy processed ..."/>

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High density hexagonal and rhombic shaped nanostructures with an average size of 4 nm have been observed in a commercial Al–Mg–Si alloy processed by equal channel angular pressing at room temperature. High-resolution transmission electron microscopy investigation of the nanostructures suggests that these planar defects are preferentially present along {111} and (001) planes. This surprising observation of the nanostructures inside ultrafine grain is probably caused by reactions between partial dislocations and stacking faults on different 1/2<110> {111} and 1/2<110> {001} slip systems in face-centered-cubic metals.

Published in:
Applied Physics Letters  (Volume:90 ,  Issue: 8 )

Date of Publication: Feb 2007

Page(s):
083115 - 083115-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.2696540
Product Type:
Journals & Magazines
Date of Current Version :
18 June 2009
Issue Date :
Feb 2007

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