title: Locality and rapidity of the ultra-large elastic deformation of Nb nanowires in a NiTi phase-transforming matrix.
abstract: This study investigated the elastic deformation behaviour of Nb nanowires embedded in a NiTi matrix. The Nb nanowires exhibited an ultra-large elastic deformation, which is found to be dictated by the martensitic transformation of the NiTi matrix, thus exhibiting unique characteristics of locality and rapidity. These are in clear contrast to our conventional observation of elastic deformations of crystalline solids, which is a homogeneous lattice distortion with a strain rate controlled by the applied strain. The Nb nanowires are also found to exhibit elastic-plastic deformation accompanying the martensitic transformation of the NiTi matrix in the case when the transformation strain of the matrix over-matches the elastic strain limit of the nanowires, or exhibit only elastic deformation in the case of under-matching. Such insight provides an important opportunity for elastic strain engineering and composite design.
authors.affiliation: State Key Laboratory of Heavy Oil Processing and Department of Materials Science and Engineering, China University of Petroleum, Beijing 102249, China.
authors.forename: Shan
authors.initials: S
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Heavy Oil Processing and Department of Materials Science and Engineering, China University of Petroleum, Beijing 102249, China.
authors.forename: Lishan
authors.initials: L
authors.lastname: Cui
authors.affiliation: State Key Laboratory of Heavy Oil Processing and Department of Materials Science and Engineering, China University of Petroleum, Beijing 102249, China.
authors.forename: Shijie
authors.initials: S
authors.lastname: Hao
authors.affiliation: 1] State Key Laboratory of Heavy Oil Processing and Department of Materials Science and Engineering, China University of Petroleum, Beijing 102249, China [2] School of Mechanical and Chemical Engineering, The University of Western Australia, Crawley, WA 6009, Australia.
authors.forename: Daqiang
authors.initials: D
authors.lastname: Jiang
authors.affiliation: School of Mechanical and Chemical Engineering, The University of Western Australia, Crawley, WA 6009, Australia.
authors.forename: Yinong
authors.initials: Y
authors.lastname: Liu
authors.affiliation: State Key Laboratory of Heavy Oil Processing and Department of Materials Science and Engineering, China University of Petroleum, Beijing 102249, China.
authors.forename: Zhenyang
authors.initials: Z
authors.lastname: Liu
authors.affiliation: Institute of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing 100124, China.
authors.forename: Shengcheng
authors.initials: S
authors.lastname: Mao
authors.affiliation: Institute of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing 100124, China.
authors.forename: Xiaodong
authors.initials: X
authors.lastname: Han
authors.affiliation: X-ray Science Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
authors.forename: Yang
authors.initials: Y
authors.lastname: Ren