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Enhanced compressive response of hybrid Mg–CNT nano-composites

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Abstract

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.

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Acknowledgements

The authors gratefully acknowledge the financial support from Qatar National Research Foundation through research grant # NPRP08-424-2-171 (R-265-000-346-597) and NUS research scholarship for supporting the research effort.

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Authors and Affiliations

  1. Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, Singapore, 117576, Singapore

    M. K. Habibi, M. Paramsothy & M. Gupta

  2. Mechanical and Industrial Engineering Department, Qatar University, P.O. Box No. 2713, Doha, Qatar

    A. M. S. Hamouda

Authors
  1. M. K. Habibi
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  2. M. Paramsothy
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  3. A. M. S. Hamouda
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  4. M. Gupta
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Correspondence to M. Gupta.

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Habibi, M.K., Paramsothy, M., Hamouda, A.M.S. et al. Enhanced compressive response of hybrid Mg–CNT nano-composites. J Mater Sci 46, 4588–4597 (2011). https://doi.org/10.1007/s10853-011-5358-2

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  • DOI: https://doi.org/10.1007/s10853-011-5358-2

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