Abstract
In this study, CNTs reinforced pure Al, 6061Al and 2009Al composites with uniformly dispersed CNTs were successfully fabricated by a combination of powder metallurgy and subsequent multi-pass friction stir processing (FSP). As the FSP pass increased, the CNT clusters were broken down due to the shear flow of the Al matrix during FSP, however, the CNTs were cut short. After 4-pass FSP, the CNTs were individually dispersed in the aluminum matrix along grain boundaries resulting in a much finer grain size. Although the CNTs were shortened and some Al4C3 formed in the matrix, the layer structures of the CNTs were well retained and the CNT-Al interface was good bonded. Compared to the Al matrix, the strength, especially the yield strength of the composites increased significantly.
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© 2013 TMS (The Minerals, Metals & Materials Society)
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Ma, Z.Y., Liu, Z.Y., Xiao, B.L., Wang, W.G. (2013). Fabrication of Carbon Nanotube Reinforced Aluminum Matrix Composites via Friction Stir Processing. In: Mishra, R., Mahoney, M.W., Sato, Y., Hovanski, Y., Verma, R. (eds) Friction Stir Welding and Processing VII. Springer, Cham. https://doi.org/10.1007/978-3-319-48108-1_3
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DOI: https://doi.org/10.1007/978-3-319-48108-1_3
Publisher Name: Springer, Cham
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