1. INTERNATIONAL TECHNOLOGICAL SCIENCES AND DESIGN SYMPOSIUM, Giresun, Turkey, 27 - 29 June 2018, pp.788-797
In this work, Al2024-SiC nanocomposites with different amount of SiC were produced by mechanical alloying method
and hot pressing method. Al2024-SiC mixtures were milled with 8 hours in planetary ball mill under argon atmosphere
at room temperature. To investigate the effect of SiC content on the properties of nanocomposites, the SiC content was
changed 0, 1, 1.5, 2, 2.5 to 3 wt%. Than the milled powders were hot pressed at 560 0C for 3 hours under 500 MPa
pressure to obtain the final samples. The change of microstructure, hardness, bending strength and tensile strength of
Al2024-SiC nanocomposites with increasing SiC content were investigated. The uniform distribution, dispersion of
SiC nano particles within the Al2024 matrix and fracture surfaces was examined by scanning electron microscopy
(SEM). A maximum bending strength and tensile strength was obtained for 2 wt.% SiC reinforced Al2024 matrix
nanocomposites. It was observed that the changes in hardness were conferred in relation to the SiC content. The results
show that the increase in hardness values and reinforcement content plays a major role on the improvement of
mechanical properties of the nanocomposites.
Keywords: Mechanical alloying, SiC, Nanocomposites, Microstructure, Strength.