期刊
SCIENTIFIC REPORTS
卷 5, 期 -, 页码 -出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/srep08892
关键词
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资金
- key National Natural Science Foundation of China (NSFC) [51231008]
- National 973 program of China [2012CB619403]
- NSFC [51471187, 11474362]
- Beijing Natural Science Foundation [2152026]
- Science Foundation of China University of Petroleum, Beijing [2462013YJRC005]
- Key Project of Chinese Ministry of Education [313055]
- US Department of Energy, Office of Science, and Office of Basic Energy Science [DE-AC02-06CH11357]
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.
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