Achieving large linear elasticity and high strength in bulk nanocompsite via synergistic effect

Scientific Reports
Shijie HaoYang Ren

Abstract

Elastic strain in bulk metallic materials is usually limited to only a fraction of 1%. Developing bulk metallic materials showing large linear elasticity and high strength has proven to be difficult. Here, based on the synergistic effect between nanowires and orientated martensite NiTi shape memory alloy, we developed an in-situ Nb nanowires -orientated martensitic NiTi matrix composite showing an ultra-large linear elastic strain of 4% and an ultrahigh yield strength of 1.8 GPa. This material also has a high mechanical energy storage efficiency of 96% and a high energy storage density of 36 J/cm(3) that is almost one order of larger than that of spring steel. It is demonstrated that the synergistic effect allows the exceptional mechanical properties of nanowires to be harvested at macro scale and the mechanical properties of matrix to be greatly improved, resulting in these superior properties. This study provides new avenues for developing advanced composites with superior properties by using effective synergistic effect between components.

References

Oct 6, 2007·Science·Paul PodsiadloNicholas A Kotov
Nov 17, 2007·Science·Krzysztof KoziolAlan Windle
Jan 26, 2008·Science·Yuris Dzenis
Jul 30, 2009·Nano Letters·Gunther RichterCynthia A Volkert
Jan 5, 2012·Nature Communications·Lin TianEvan Ma

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Citations

Apr 25, 2017·Advanced Science·Shiliang WangHan Huang

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Methods Mentioned

BETA
X-ray

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