title: Retaining Large and Adjustable Elastic Strains of Kilogram-Scale Nb Nanowires.
abstract: Individual metallic nanowires can sustain ultralarge elastic strains of 4-7%. However, achieving and retaining elastic strains of such magnitude in kilogram-scale nanowires are challenging. Here, we find that under active load, ∼ 5.6% elastic strain can be achieved in Nb nanowires embedded in a metallic matrix deforming by detwinning. Moreover, large tensile (2.8%) and compressive (-2.4%) elastic strains can be retained in kilogram-scale Nb nanowires when the external load was fully removed, and adjustable in magnitude by processing control. It is then demonstrated that the retained tensile elastic strains of Nb nanowires can increase their superconducting transition temperature and critical magnetic field, in comparison with the unstrained original material. This study opens new avenues for retaining large and tunable elastic strains in great quantities of nanowires and elastic-strain-engineering at industrial scale.
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum , Beijing 102249, China.
authors.forename: Shijie
authors.initials: S
authors.lastname: Hao
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum , Beijing 102249, China.
authors.forename: Lishan
authors.initials: L
authors.lastname: Cui
authors.affiliation: State Key Laboratory for Mechanical Behavior of Materials and Frontier Institute of Science and Technology, Xi'an Jiaotong University , Xi'an 710049, China.
authors.forename: Hua
authors.initials: H
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum , Beijing 102249, China.
authors.forename: Daqiang
authors.initials: D
authors.lastname: Jiang
authors.affiliation: School of Mechanical and Chemical Engineering, The University of Western Australia , Crawley, Washington 6009, Australia.
authors.forename: Yinong
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Materials Science and Technology Division, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States.|Department of Materials Science and Engineering, University of Tennessee , Knoxville, Tennessee 37996, United States.
authors.forename: Jiaqiang
authors.initials: J
authors.lastname: Yan
authors.affiliation: X-ray Science Division, Argonne National Laboratory , Argonne, Illinois 60439, United States.
authors.forename: Yang
authors.initials: Y
authors.lastname: Ren
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: Department of Physics, Northern Illinois University , De Kalb, Illinois 60115, United States.
authors.forename: Dennis E
authors.initials: DE
authors.lastname: Brown
authors.affiliation: State Key Laboratory of Heavy Oil Processing, China University of Petroleum , Beijing 102249, China.|Department of Nuclear Science and Engineering and Department of Materials Science and Engineering, Massachusetts Institute of Technology , Cambridge, Massachusetts 02139, United States.
authors.forename: Ju
authors.initials: J
authors.lastname: Li
keywords: elastic strain; elastic strain engineering; high-energy X-ray diffraction; nanowires; shape memory alloy