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Journal of Nanomaterials
Volume 2010, Article ID 712407, 8 pages
http://dx.doi.org/10.1155/2010/712407
Research Article

Characterization of Mechanically Alloyed Nanocrystalline Fe(Al): Crystallite Size and Dislocation Density

1Laboratoire de Chimie Inorganique, Faculté des Sciences de Sfax, Université de Sfax, B.P. 1171, Sfax 3018, Tunisia
2Departamento de Física, Universitat de Girona, Campus Montilivi, 17071 Girona, Spain

Received 24 March 2010; Revised 19 July 2010; Accepted 15 November 2010

Academic Editor: Edward Andrew Payzant

Copyright © 2010 M. Mhadhbi 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.

Abstract

A nanostructured disordered Fe(Al) solid solution was obtained from elemental powders of Fe and Al using a high-energy ball mill. The transformations occurring in the material during milling were studied with the use of X-ray diffraction. In addition lattice microstrain, average crystallite size, dislocation density, and the lattice parameter were determined. Scanning electron microscopy (SEM) was employed to examine the morphology of the samples as a function of milling times. Thermal behaviour of the milled powders was examined by differential scanning calorimetry (DSC). The results, as well as dissimilarity between calorimetric curves of the powders after 2 and 20 h of milling, indicated the formation of a nanostructured Fe(Al) solid solution.