Friction stir processing of Al-CNT composites
Date of Issue2015
School of Mechanical and Aerospace Engineering
Singapore Institute of Manufacturing Technology
Friction stir processing (FSP) is a solid-state process with the ability to refine grain sizes and uniformly disperse particles to improve the mechanical properties of the base material. In this study, FSP was performed on AA6061-T6 with and without additions of multi-walled CNTs. For FSP on monolithic Al plates, dendrites were broken down and dispersed uniformly with the increase in number of passes. As for FSP of Al–CNT composites, the CNTs have been successfully dispersed with three FSP passes. Dispersion is more uniform with increasing number of passes. The Vickers hardness and tensile yield strength were found to have improved after performing FSP with the addition of CNT as compared to FSP of AA6061-T6 without CNT.
Friction stir processing
Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications
© 2015 Institution of Mechanical Engineers (IMechE). This is the author created version of a work that has been peer reviewed and accepted for publication by Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications, IMechE. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1177/1464420715571189].