|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Metal-Matrix Composites Innovations, Advances and Applications: An SMD Symposium in Honor of William C. Harrigan, Jr.
||G-55: Influence of Graphene Nanoplatelet Reinforcements on Microstructural Development and Wear Behavior of An Aluminum Alloy Nanocomposite
||Mohammad Alipour, Reza Eslami Farsani, Yu. A. Abuzin
|On-Site Speaker (Planned)
Microstructure and wear behavior of aluminum alloy AA7068/graphene nanoplate (GNPs) composites produced by ball milling, stir casting and ultrasonic waves have been investigated. The microstructural studies of the alloy revealed that GNPs addition reduces the grain size, but adding higher GNPs content (1 wt% GNPs) does not change the grain size considerably. T6 heat treatment was applied for all specimens before wear testing. Significant improvements in wear behavior were obtained with the addition of GNPs combined with T6 heat treatment. At higher GNPs contents, the presence of graphene agglomerate on grain boundaries was found to be the favored path for crack growth. The optimum amount of nanoparticles is 0.5 wt.% GNPs. Dry sliding wear performance of the alloy was examined in normal atmospheric conditions. The experimental results showed that the T6 heat treatment considerably improved the resistance of 7068 aluminum alloy reinforced with 0.5 wt.% GNPs to the dry sliding wear.
||Planned: None Selected