Investigation of Mechanical Behavior of Carbon Nanotube Reinforced Aluminum Matrix AlMg / KNT Composites

In this study, AlMg / KNT nanocomposite materials reinforced with KNT reinforced with different proportions (2.5%, 5% and 10%) to AlMg matrix were synthesized using powder metallurgy technique. The mechanical alloying (MA) process was carried out in Turbula mixing device for 7 hours and 400 rpm. After mechanical alloying, powder characterization, optical examinations, hardness and density tests were carried out. The XRD spectrometer was scanned at 10-90 degrees to sensitively XRD the specimen, and then samples of metal mold under 200 MPa pressure were produced. Composite samples of AlMg/KNT produced were sintered at different temperatures (350 oC, 400 oC, 450 oC) for 120 minutes under high vacuum, and hardness, density and metallographic investigations of the samples were made. In the same atmosphere, an increase of 42,6o visibly was observed with increasing CNT ratios in peak intensities of AlMg / KNT composite specimens produced with different temperature and different CNT ratios. Along with the increased KNT ratio in the same way, the improvement of the hardness values due to the sintering temperature and the corresponding decrease in the density of KNT were observed