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2015 | 127 | 6 | 1722-1727
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Microstructural Characterization and Consolidation of Severely Deformed Copper Powder Reinforced with Multiwalled Carbon Nanotubes

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In this paper, the mechanical milling process for various durations was used to generate a homogeneous distribution of 1 wt.% carbon nanotube within Cu powder. Effects of milling time on morphology, microstructure, and microhardness of the powder were studied. The results showed that work hardened Cu-carbon nanotube nanocomposite powder with nanosized grains can be fabricated by the mechanical milling of the elemental materials. The addition of carbon nanotubes accelerated the morphological and microstructural evolution during the mechanical milling and influenced the compressibility of the powder. The compressibility behavior of the powder was analyzed using analytical models and used to estimate the strength of the powder. The nanocomposite compacts were sintered in vacuum and showed the maximum relative density of ≈91% at optimum condition.
  • Department of Materials Engineering, Faculty of Engineering, University of Maragheh, Maragheh, East Azerbaijan, Iran
  • Materials and Energy Research Center (MERC), P.O. Box 14155-4777, Tehran, Iran
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