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Open AccessArticle

Synthesis and Characterization of Nanocrystalline Al-20 at. % Cu Powders Produced by Mechanical Alloying

1
Laboratory of Inorganic Chemistry, University of Sfax, Sfax 3000, Tunisia
2
Department de Fisica, Universitat de Girona, Campus Montilivi, Girona 17071, Spain
*
Author to whom correspondence should be addressed.
Academic Editor: Nong Gao
Metals 2016, 6(7), 145; https://doi.org/10.3390/met6070145
Received: 8 May 2016 / Revised: 4 June 2016 / Accepted: 15 June 2016 / Published: 29 June 2016
(This article belongs to the Special Issue Aluminum Alloys)
Mechanical alloying is a powder processing technique used to process materials farther from equilibrium state. This technique is mainly used to process difficult-to-alloy materials in which the solid solubility is limited and to process materials where nonequilibrium phases cannot be produced at room temperature through conventional processing techniques. This work deals with the microstructural properties of the Al-20 at. % Cu alloy prepared by high-energy ball milling of elemental aluminum and copper powders. The ball milling of powders was carried out in a planetary mill in order to obtain a nanostructured Al-20 at. % Cu alloy. The obtained powders were characterized using scanning electron microscopy (SEM), differential scanning calorimetry (DSC) and X-ray diffraction (XRD). The structural modifications at different stages of the ball milling are investigated with X-ray diffraction. Several microstructure parameters such as the crystallite sizes, microstrains and lattice parameters are determined. View Full-Text
Keywords: mechanical alloying; nanocrystalline; crystallite sizes; morphology mechanical alloying; nanocrystalline; crystallite sizes; morphology
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Makhlouf, M.B.; Bachaga, T.; Sunol, J.J.; Dammak, M.; Khitouni, M. Synthesis and Characterization of Nanocrystalline Al-20 at. % Cu Powders Produced by Mechanical Alloying. Metals 2016, 6, 145.

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