Investigating the internal structure and mechanical properties of graphene nanoflakes enhanced aluminum foam

Publication date: 15 November 2017
Source:Materials & Design, Volume 134
Author(s): Yukun An, Siyi Yang, Hongyan Wu, Ertuan Zhao, Zongshen Wang
The manuscript focuses on analyzing the pore morphology and pore distribution of novel graphene nanoflakes reinforced aluminum foam (GNF-AF) and investigating their mechanical properties under quasi-static compressive loadings. Experimental results indicate the existence of GNFs can reduce the pore diameter, refine the pore morphology, and improve the pore distribution. Distinguish from other brittle foams, GNF-AF presents smooth stress-strain curve, wherein the local buckling deformation, shear deformation, tensile deformation combinate the whole compressive behavior. By comparing the plateau stress, energy absorption, and specific energy absorption of GNF-AF with varying content of GNFs, a notable improvement of 29.0%, 28.5%, and 27.9% was detected by adding 0.10wt% GNFs. Besides, the energy absorption efficiency of enhanced aluminum foam was slightly improved.

Graphical abstract

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