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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
Created on: 31.05.2017

JOM. The journal of the Minerals, Metals & Materials Society 68 (2016), No.5, pp.1312-1316
ISSN: 0148-6608
ISSN: 1047-4838
ISSN: 1543-1851
Journal Article, Electronic Publication
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.