|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Metal and Polymer Matrix Composites II
||Effect of Nano-particle Addition on Grain Structure Evolution of Friction Stir Processed Al 6061 during Post-weld Annealing
||Junfeng Guo, Bing Yang Lee, Zhenglin Du, Guijun Bi, Ming Jen Tan, Jun Wei
|On-Site Speaker (Planned)
The fabrication of nano-composites is quite challenging because uniform dispersion of nano-sized reinforcements in metallic substrate is difficult to achieve using powder metallurgy or liquid processing methods. In the present study, Al-based nano-composites reinforced with Al2O3 particles has been successfully fabricated using friction stir processing. The effects of nano-Al2O3 particle addition on grain structure evolution of friction stir processed Al matrix during post-weld annealing were investigated. It was revealed that the pinning effect of Al2O3 particles retarded grain growth and completely prevented abnormal grain growth during post weld annealing at 470 °C. However, abnormal grain growth can still occur when the composite material was annealed at 530 °C. The mechanism involved in the grain structure evolution was discussed therein.
||Planned: A print-only volume