Abstract
The influence mechanism of the strain rate on the tensile behavior of the copper nanowires is investigated with molecular dynamics (MD) simulations. Three failure modes are observed at the loading strain rates from 5×106 to 1×109 s−1. The three modes are named slipping mode, mixed mode and necking mode, respectively. The evolution of atomic configurations show that the competition of the lattice recovery and the dislocation multiplication determines the fracture mode, and the importance of lattice recovery decreases with the increase of strain rate. The input and the reflection of the tensile wave, which is induced by tensile loading, also plays an important role in the failure mechanism. The location of necking tends to approach the two ends of nanowire at higher strain rates.
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Bachtold A, Hadley P, Nakanishi T, et al. Logic circuits with carbon nanotube transistors. Science, 2001, 294: 1317–1320
Wang B, Zhang H B, Huang L J, et al. Evolution of microstructure and high temperature tensile properties of as-extruded TiBw reinforced near-α titanium matrix composite subjected to heat treatments. Sci China Tech Sci, 2018, 61: 1340–1345
Gall K, Diao J, Dunn M L. The strength of gold nanowires. Nano Lett, 2004, 4: 2431–2436
Philippe L, Peyrot I, Michler J, et al. Yield stress of monocrystalline rhenium nanowires. Appl Phys Lett, 2007, 91: 111919
Lao J, Naghdi Tam M, Pinisetty D, et al. Molecular dynamics simulation of fcc metallic nanowires: A review. J Miner Metal Mater Soc, 2013, 65: 175–184
Zheng Y G, Zhao Y T, Ye H F, et al. Size-dependent elastic moduli and vibrational properties of fivefold twinned copper nanowires. Nanotechnology, 2014, 25: 315701
Branício P S, Rino J P. Large deformation and amorphization of Ni nanowires under uniaxial strain: A molecular dynamics study. Phys Rev B, 2000, 62: 16950–16955
Wang B, Shi D, Jia J, et al. Elastic and plastic deformations of nickel nanowires under uniaxial compression. Phys E-Low-Dimensional Syst Nanostruct, 2005, 30: 45–50
Qin M, Shang Y, Wang X, et al. Mg doping and native N vacancy effect on electronic and transport properties of AlN nanowires. Sci China Tech Sci, 2015, 58: 832–839
Wang L F, Xu Z, Yang S Z, et al. Real-time in situ TEM studying the fading mechanism of tin dioxide nanowire electrodes in lithium ion batteries. Sci China Tech Sci, 2013, 56: 2630–2635
Li X, Gao H, Murphy C J, et al. Nanoindentation of silver nanowires. Nano Lett, 2003, 3: 1495–1498
Wu B, Heidelberg A, Boland J J. Mechanical properties of ultrahigh-strength gold nanowires. Nat Mater, 2005, 4: 525–529
Ni H, Li X, Gao H. Elastic modulus of amorphous SiO2 nanowires. Appl Phys Lett, 2006, 88: 043108
Wu H A. Molecular dynamics study of the mechanics of metal nanowires at finite temperature. Eur J Mech-A/Solids, 2006, 25: 370–377
Chen D L, Chen T C. Mechanical properties of au nanowires under uniaxial tension with high strain-rate by molecular dynamics. Nanotechnology, 2005, 16: 2972–2981
Sainath G, Choudhary B K. Atomistic simulations on ductile-brittle transition in 111 BCC Fe nanowires. J Appl Phys, 2017, 122: 095101
Sun H L, Chen L Y, Sun S, et al. Size- and temperature-dependent Young’s modulus and size-dependent thermal expansion coefficient of nanowires. Sci China Tech Sci, 2018, 61: 687–698
Zheng Y, Lu J, Zhang H, et al. Strengthening and toughening by interface-mediated slip transfer reaction in nanotwinned copper. Scripta Mater, 2009, 60: 508–511
Zhu W, Wang H, Yang W. Orientation- and microstructure-dependent deformation in metal nanowires under bending. Acta Mater, 2012, 60: 7112–7122
Wu H A. Molecular dynamics study on mechanics of metal nanowire. Mech Res Commun, 2006, 33: 9–16
Liang W, Zhou M. Response of copper nanowires in dynamic tensile deformation. Proc Institution Mech Engineers Part C-J Mech Eng Sci, 2004, 218: 599–606
Yuan F, Huang L. Molecular dynamics simulation of amorphous silica under uniaxial tension: From bulk to nanowire. J Non-Crystalline Solids, 2012, 358: 3481–3487
Sainath G, Choudhary B K, Jayakumar T. Molecular dynamics simulation studies on the size dependent tensile deformation and fracture behaviour of body centred cubic iron nanowires. Comput Mater Sci, 2015, 104: 76–83
Tang C Y, Zhang L C, Mylvaganam K. Rate dependent deformation of a silicon nanowire under uniaxial compression: Yielding, buckling and constitutive description. Comput Mater Sci, 2012, 51: 117–121
Plimpton S. Fast parallel algorithms for short-range molecular dynamics. J Comput Phys, 1995, 117: 1–19
Daw M S, Baskes M I. Embedded-atom method: Derivation and application to impurities, surfaces, and other defects in metals. Phys Rev B, 1984, 29: 6443–6453
Foiles S M, Baskes M I, Daw M S. Embedded-atom-method functions for the fcc metals Cu, Ag, Au, Ni, Pd, Pt, and their alloys. Phys Rev B, 1986, 33: 7983–7991
Zhang W, Lin J, Xu W, et al. Scstore: Managing scientific computing packages for hybrid system with containers. Tsinghua Sci Technol, 2017, 22: 675–681
Li L, Han M. Molecular dynamics simulations on tensile behaviors of single-crystal bcc Fe nanowire: Effects of strain rates and thermal environment. Appl Phys A, 2017, 123: 450
Zhang X, Li X, Gao H. Size and strain rate effects in tensile strength of penta-twinned Ag nanowires. Acta Mech Sin, 2017, 33: 792–800
Chang L, Zhou C Y, Wen L L, et al. Molecular dynamics study of strain rate effects on tensile behavior of single crystal titanium nanowire. Comput Mater Sci, 2017, 128: 348–358
Xie H, Yin F, Yu T, et al. A new strain-rate-induced deformation mechanism of Cu nanowire: Transition from dislocation nucleation to phase transformation. Acta Mater, 2015, 85: 191–198
Kelchner C L, Plimpton S J, Hamilton J C. Dislocation nucleation and defect structure during surface indentation. Phys Rev B, 1998, 58: 11085–11088
Stukowski A, Bulatov V V, Arsenlis A. Automated identification and indexing of dislocations in crystal interfaces. Model Simul Mater Sci Eng, 2012, 20: 085007
Stukowski A. Visualization and analysis of atomistic simulation data with OVITO-the open visualization tool. Model Simul Mater Sci Eng, 2009, 18: 015012
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This work was supported by the National Natural Science Foundation of China (Grant Nos. 117721 71, 11672154), and the Science Challenge Project (Grant No. TZ2018001).
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Zhao, L., Liu, Y. The influence mechanism of the strain rate on the tensile behavior of copper nanowire. Sci. China Technol. Sci. 62, 2014–2020 (2019). https://doi.org/10.1007/s11431-019-9530-6
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DOI: https://doi.org/10.1007/s11431-019-9530-6