Achieving large linear elasticity and high strength in bulk nanocompsite via synergistic effect.
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.
State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China.
Shijie
S
Hao
State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China.
Lishan
L
Cui
State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China.
Fangmin
F
Guo
School of Mechanical and Chemical Engineering, The University of Western Australia, Crawley, WA 6009, Australia.
Yinong
Y
Liu
State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China.
Xiaobin
X
Shi
State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Beijing 102249, China.
Daqiang
D
Jiang
Department of Physics, Northern Illinois University, De Kalb, Illinois 60115, USA.
Dennis E
DE
Brown
X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA.
Yang
Y
Ren