Effect of twin boundaries on the strength of body-centered cubic tungsten nanowires

J Cui, L Ma, G Chen, N Jiang, P Ke, Y Yang… - Materials Science and …, 2023 - Elsevier
Twin boundaries (TBs) are assumed to be obstacles to dislocation motion and increase the
strength of metals. Here, we report the abnormal phenomenon that TBs reduce the strength …

[HTML][HTML] Origins of strengthening and failure in twinned Au nanowires: Insights from in− situ experiments and atomistic simulations

Z Xie, J Shin, J Renner, A Prakash, DS Gianola… - Acta Materialia, 2020 - Elsevier
Abstract The deformation behavior of⟨ 110⟩-oriented twinned Au nanowires (NWs) with
multiple longitudinal coherent twin boundaries (CTBs) under tension is studied using in− situ …

An atomistic study of the deformation behavior of tungsten nanowires

S Xu, Y Su, D Chen, L Li - Applied Physics A, 2017 - Springer
Large-scale atomistic simulations are performed to study tensile and compressive ⟨ 112 ⟩⟨
112⟩ loading of single-crystalline nanowires in body-centered cubic tungsten (W). Effects of …

Bending-induced deformation twinning in body-centered cubic tungsten nanowires

S Wei, Q Wang, H Wei, J Wang - Materials Research Letters, 2019 - Taylor & Francis
The competition between dislocation slip and deformation twinning in body-centered cubic
(BCC) nanocrystals can be strongly influenced by the deformation conditions. In this study …

Orientation-and microstructure-dependent deformation in metal nanowires under bending

W Zhu, H Wang, W Yang - Acta materialia, 2012 - Elsevier
Device miniaturization requires the bending of nanowires (NWs) on the nanoscale. To
explore the mechanical behavior the mechanisms of plastic deformation of nickel nanowires …

In-situ TEM study of dislocation interaction with twin boundary and retraction in twinned metallic nanowires

G Cheng, S Yin, C Li, TH Chang, G Richter, H Gao… - Acta Materialia, 2020 - Elsevier
Metallic nanowires (NWs) with twin boundaries (TBs) running parallel to the NW length
direction exhibit unusual plastic strain recovery owing to the interaction of dislocations with …

Annealing effects on the elastic modulus of tungsten oxide nanowires

Y Zhu, Y Zhang, FC Cheong, CH Sow… - Journal of Materials …, 2008 - cambridge.org
Three-point bend test coupled with transmission electron microscopy (TEM) analysis was
carried out on individual tungsten oxide nanowires (NWs) before and after annealing. Three …

Strengthening mechanisms and dislocation dynamics in twinned metal nanowires

AJ Cao, YG Wei, SX Mao - JOM, 2008 - Springer
Microtwins are frequently observed in face-centered-cubic (fcc) metal nanowires with low
stacking fault energy. The authors have previously reported that the tensile yield strength of …

Deformation mechanisms of face-centered-cubic metal nanowires with twin boundaries

AJ Cao, YG Wei, SX Mao - Applied physics letters, 2007 - pubs.aip.org
This letter addresses the issue of deformation mechanisms and mechanical tensile behavior
of the twinned metal nanowires using atomistic simulations. Free surfaces are always the …

Size effect and deformation mechanism in twinned copper nanowires

J Sun, C Li, J Han, X Shao, X Yang, H Liu, D Song… - Metals, 2017 - mdpi.com
Molecular dynamics simulations were performed to demonstrate the synergistic effects of the
extrinsic size (nanowire length) and intrinsic size (twin boundary spacing) on the failure …