Heat-resistant bulk nanostructured P/M aluminium

In this work, a simple route to produce bulk nanostructured aluminium is presented. Firstly, a thermally stable nanocomposite Al powder is prepared by attrition milling of elemental Al in the presence of 2.1 wt.% urea. Then, the milled powder is consolidated to full density by a conventional press-a...

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Veröffentlicht in:Journal of alloys and compounds 2008-06, Vol.458 (1), p.282-285
Hauptverfasser: Cintas, J., Montes, J.M., Cuevas, F.G., Herrera, E.J.
Format: Artikel
Sprache:eng
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Zusammenfassung:In this work, a simple route to produce bulk nanostructured aluminium is presented. Firstly, a thermally stable nanocomposite Al powder is prepared by attrition milling of elemental Al in the presence of 2.1 wt.% urea. Then, the milled powder is consolidated to full density by a conventional press-and-sinter powder metallurgy (P/M) technique. Shaped specimens possess a stable microstructure, with a grain size of about 150 nm, and the ultimate tensile strength (550 MPa) surpasses that of most commercial Al alloys, especially at high temperatures.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2007.04.209