Abstract
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 have 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.
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Junfeng, G., Yang, L.B., Zhenglin, D., Guijun, B., Jen, T.M., Jun, W. (2016). Effect of Nano-Particle Addition on Grain Structure Evolution of Friction Stir Processed Al 6061 During Post-Weld Annealing. In: TMS 2016 145th Annual Meeting & Exhibition. Springer, Cham. https://doi.org/10.1007/978-3-319-48254-5_10
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DOI: https://doi.org/10.1007/978-3-319-48254-5_10
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48624-6
Online ISBN: 978-3-319-48254-5
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