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The influence of Al4C3 nanoparticles on the physical and mechanical properties of metal matrix composites at high temperatures

: Vorozhtsov, S.; Kolarik, V.; Promakhov, V.; Zhukov, I.; Vorozhtsov, A.; Kuchenreuther-Hummel, V.

Postprint urn:nbn:de:0011-n-4043017 (4.5 MByte PDF)
MD5 Fingerprint: 66d3201f074064fce468095ec47b1111
Erstellt am: 31.05.2017

JOM. The journal of the Minerals, Metals & Materials Society 68 (2016), Nr.5, S.1312-1316
ISSN: 0148-6608
ISSN: 1047-4838
ISSN: 1543-1851
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer ICT ()

Metal matrix composites (MMC) based on aluminum and reinforced with nonmetallic particles are of great practical interest due to their potentially high physico-mechanical properties. In this work, Al-Al4C3 composites were obtained by a hot-compacting method. Introduction of nanodiamonds produced by detonation to the Al powder in an amount of 10 wt.% led to the formation of similar to 15 wt.% of aluminum carbide during hot compacting. It was found that composite materials with the diamond content of 10 wt.% in the initial powder mix have an average microhardness of 1550 MPa, whilst the similarly compacted aluminum powder without reinforcing particles shows a hardness of 750 MPa. The mechanical properties of an Al-Al4C3 MMC at elevated test temperatures exceeded those of commercial casting aluminum alloys such as A356.