Cold-Spray processing of a nanocrystalline Al−Cu−Mg−Fe−Ni alloy with Sc |
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Authors: | L Ajdelsztajn A Zúñiga B Jodoin E J Lavernia |
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Affiliation: | (1) Department of Chemical Engineering and Materials Science, University of California, 95616 Davis, CA;(2) Department of Mechanical Engineering, University of Ottawa, K1N 6N5 Ontario, Canada |
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Abstract: | This work describes recent progress in cold-spray processing of conventional and nanocrystalline 2618 (Al−Cu−Mg−Fe−Ni) aluminum
alloy containing scandium (Sc). As-atomized and cryomilled 2618+Sc aluminum powder were sprayed onto aluminum substrates.
The mechanical behavior of the powders and the coatings were studied using micro-and nanoindentation techniques, and the microstructure
was analyzed using scanning and transmission electron microscopy (SEM and TEM). The influence of powder microstructure, morphology,
and behavior during deposition on the coating properties was analyzed. This work shows that Al−Cu−Mg−Fe−Ni−Sc coatings with
a nanocrystalline grain structure can be successfully produced by the cold-spray process. Inspection of the scientific literature
suggests that this is the first time a hardness value of 181 HV has been reported for this specific alloy.
The original version of this paper was published in the CD ROM Thermal Spray Connects: Explore Its Surfacing Potential, International Thermal Spray Conference, sponsored by DVS, ASM International, and IIW International Institute of Welding,
Basel, Switzerland, May 2–4, 2005, DVS-Verlag GmbH, Düsseldorf, Germany. |
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Keywords: | cold gas dynamic spraying nanostructured coatings nanostructured materials |
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