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Carbon Nanotube Reinforced Intermetallic

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Iron aluminides (Fe3Al) based composite with different amounts of multi-walled carbon nanotube (MWNT) have been prepared by using spark plasma sintering. Effect of MWNTs content on the mechanical properties was investigated. The compressive yield strength and fracture toughness of the 3 vol% MWNTs–Fe3Al composite, compared with the monolithic Fe3Al, were enhanced 73.6% and 40%, respectively. The main reinforced mechanisms include MWNTs pulling-out, crack deflection, bridging and MWNTs rupture. The defects and aligning direction of MWNTs in the matrix are also the factors that affect the mechanical properties of composites as prepared.
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Keywords: CARBON NANOTUBES; COMPOSITES; INTERMETALLICS; TOUGHNESS MECHANISM

Document Type: Research Article

Affiliations: 1: Department of Civil Engineering, Shandong Jiaotong University, Jiaoxiao Road 5, Jinan, 250023, P. R. China 2: School of Materials Science and Engineering, Shandong University, Jinan, 250061, P. R. China

Publication date: 2010-06-01

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