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Enhanced compressive response of hybrid Mg-CNT nano-composites

Author(s): Habibi, MK (Habibi, M. K.); Paramsothy, M (Paramsothy, M.); Hamouda, AMS (Hamouda, A. M. S.); Gupta, M (Gupta, M.)

Uniaxial compressive properties of hybrid Mg/Al–CNT nano-composites are studied in the present paper. Hybrid nano-composites were fabricated using powder metallurgy route followed by microwave assisted rapid sintering technique and hot extrusion. The hybrid Mg/Al–CNT nano-composites exhibited slightly smaller grain sizes compared to monolithic Mg and reasonable hybrid Al–CNT nano-particle distribution up to Al content of 1.00 wt%. Compared to pure Mg, the Mg/Al–CNT nano-composites exhibited higher compressive yield strength (0.2% CYS), ultimate compressive strength (UCS) and work of fracture (WOF) (up to +36%, +76%, +36%) compared to pure Mg but failure strain was compromised. Inclusive of crystallographic texture changes, the effect of hybrid Al–CNT nano-particle integration on the enhancement of compressive properties of Mg is investigated in this paper.


Source: JOURNAL OF MATERIALS SCIENCE 46(13): 4588-4597 JUL 2011

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