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Fabrication of Al6061-CNT Composite by Mechanical Alloying Followed by Semi-Solid Powder Processing

[+] Author Affiliations
Yufeng Wu, Gap-Yong Kim

Iowa State University, Ames, IA

Paper No. MSEC2010-34074, pp. 399-403; 5 pages
doi:10.1115/MSEC2010-34074
From:
  • ASME 2010 International Manufacturing Science and Engineering Conference
  • ASME 2010 International Manufacturing Science and Engineering Conference, Volume 2
  • Erie, Pennsylvania, USA, October 12–15, 2010
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-4947-7 | eISBN: 978-0-7918-3887-7
  • Copyright © 2010 by ASME

abstract

Carbon nanotubes (CNTs) have been widely investigated as a reinforcement material to improve the mechanical, electrical and thermal properties of composite materials. Various routes have been employed to fabricate aluminum-carbon nanotube (Al-CNT) composites in the past few years. However, uniform distribution of CNTs in the metal matrix is still challenging. In this paper, a novel semi-solid powder processing (SPP) was used to incorporate CNT uniformly into the Al6061-CNT composite. Al6061-CNT powders mechanically alloyed for different durations were also examined to understand how the CNTs were dispersed in the Al6061 powders. As-received CNT cluster balls were crushed into dense thin CNT layers during mechanical alloying. As mechanical alloying time increased, CNTs were dispersed in the Al6061 particles. Well-densified microstructures with severely deformed grains were observed in the Al6061-CNT composite.

Copyright © 2010 by ASME

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