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Journal of Nanomaterials
Volume 2013, Article ID 404903, 6 pages
Research Article

Strain Mapping and Nanocrystallite Size Determination by Neutron Diffraction in an Aluminum Alloy (AA5083) Severely Plastically Deformed through Equal Channel Angular Pressing

1Departamento de Ingeniería Mecánica, Energética y de Materiales, ETSIIT-UPNA, Campus de Arrosadía S/N, 31006 Pamplona, Spain
2WMG, International Manufacturing Centre, University of Warwick, Coventry CV4 7AL, UK
3Department of Crystallography, Institute of Materials Science of Barcelona, Spanish Council for Scientific Research, ICMAB-CSIC, UAB Campus, 08193 Bellaterra, Spain

Received 28 September 2013; Accepted 1 November 2013

Academic Editor: Khaled Youssef

Copyright © 2013 P. A. González Crespo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Six specimens of an aluminum alloy (AA-5083) extruded by Equal Channel Angular Pressing following two different routes plus a blank sample were examined with a neutron radiation of 1.5448 Å. Macrostrain maps from the (311) reflection were obtained. A clear difference about accumulated macrostrain with the extrusion cycles between the two routes is shown. The diffraction data of annealed specimens did permit to estimate crystallite sizes that range between 89 nm and 115 nm depending on the routes.