Anisotropic and temperature effects on mechanical properties of copper nanowires under tensile loading

Gao, Yajun; Wang, Hongbo; Zhao, Jianwei; Sun, Chang Q.; Wang, Fengyin

doi:10.1016/j.commatsci.2011.05.023

Cited by 56 publications

(37 citation statements)

References 56 publications

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“…The partial dislocations and stacking faults generated in the copper nano-wires along h1 0 0i loading direction presented above are basically the same as those found for pure copper nanowires in previous studies [22]. However, silver impurities affect the stress needed for the nucleation of these defects, modifying the yield point of the material.…”

Section: The Onset Of Plasticity and The Generalized Stacking Fault Esupporting

confidence: 53%

“…The system under study consists of a face centred cubic (fcc) copper nanowire with square cross-section, like most nanowires studied in previous works [20][21][22][23], with a size corresponding to 40 Â 10 Â 10 in terms of the lattice parameter, which is 3.61 Å for copper. The orientation is such that the axial axis is along ½1 0 0 direction, with six f1 0 0g side surfaces, as is shown in Fig.…”

Section: Methodsmentioning

confidence: 99%

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Atomistic simulation of single crystal copper nanowires under tensile stress: Influence of silver impurities in the emission of dislocations

Amigó

Gutiérrez

Ignat

2014

Computational Materials Science

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Section: The Onset Of Plasticity and The Generalized Stacking Fault Esupporting

confidence: 53%

Section: Methodsmentioning

confidence: 99%

Atomistic simulation of single crystal copper nanowires under tensile stress: Influence of silver impurities in the emission of dislocations

Amigó

Gutiérrez

Ignat

2014

Computational Materials Science

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“…This discrepancy may be related to the low temperature of 30 K and the Foiles EAM potential utilized in current work. The temperaturedependent mechanical properties of NWs have been widely reported [21,22]. Furthermore, recent experimental study also suggested that the strengthening effect of TBs depends strongly on temperature [23].…”

Section: Simulation Methodsmentioning

confidence: 99%

Detwinning-induced reduction in ductility of twinned copper nanowires

Zhang

Yan

et al. 2012

Chin. Sci. Bull.

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Detwinning is a unique deformation mechanism of nanotwinned metals with twin lamellae thickness down to a few nanometers. In this work we investigate the impact of detwinning mechanism on the tensile ductility of twinned Cu nanowires containing high density of parallel twin boundaries by means of molecular dynamics simulations. Simulation results show that the fracture strain of twinned Cu nanowires has a strong dependence on twin boundary spacing, resulting from the competition between individual deformation modes. Particularly for the twinned Cu nanowires containing the thinnest twin lamellaes, the dominant detwinning mechanism leads to a significant reduction in the tensile ductility. It is found that detwinning originates from twin boundary migration, which is a result of the glide of lattice partial dislocations on the twin planes. This work advances our fundamental understanding of the twin boundary-related mechanical properties of twinned metallic nanowires.

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“…Çok cisim etkileşmelerini içeren GAM, sadece yapısı ve etkili sonuç vermesinden dolayı benzetim çalışmalarında en çok tercih edilen potansiyel fonksiyonlarındandır. [18,19]. Literatürde nano teller ile ilgili MD benzetim yöntemi kullanılarak yapılan birçok çalışma bulunmaktadır [20][21][22].…”

Section: Introductionunclassified

Kristal Yöneliminin ve Sıcaklığın Cu Nano Telinin Mekanik Özelliklerine Etkisinin Moleküler Dinamik Benzetimi ile İncelenmesi

Kazanç¹

2022

Deu Muhendislik Fakultesi Fen Ve Muhendislik

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ÖzBu çalışmada <100>, <110> ve <111> yüksek simetrili kristalografik yönelimleri boyunca Cu nano teline uygulanan tek eksenli gerilme deformasyonunun mekanik özelliklere etkisi Moleküler Dinamik (MD) benzetim yöntemi ile incelendi. Atomlar üzerine etki eden kuvvetler çok cisim etkileşmelerini içeren Gömülmüş Atom Metodu (GAM) potansiyel fonksiyonunun türevinden elde edildi. Farklı kristal yönelimlerine sahip Cu model nano tellerin farklı sıcaklıklar altında zorzorlanma eğrileri, elastiklik modülü (E), akma zoru değerleri belirlendi. Elde edilen atomik görüntüler ve genel komşu analiz metodu (Common Neighbor Analysis-CNA) kullanılarak uygulanan gerilme sonucu nano tellerde meydana gelen plastik deformasyonun bütün yönelimler için Shockley kısmi dislokasyonların aktif hale geçmesi ve yığılım kusurları sonucu meydana geldiği tespit edildi. Ayrıca <100> ve <110> yönelimleri için akma meydana geldiğinde ikiz yapılarının oluşumu belirlendi. Kristal yönelimlerinin nano telin mekanik özellikleri üzerinde önemli bir etkiye sahip olduğu görüldü.

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Anisotropic and temperature effects on mechanical properties of copper nanowires under tensile loading

Cited by 56 publications

References 56 publications

Atomistic simulation of single crystal copper nanowires under tensile stress: Influence of silver impurities in the emission of dislocations

Atomistic simulation of single crystal copper nanowires under tensile stress: Influence of silver impurities in the emission of dislocations

Detwinning-induced reduction in ductility of twinned copper nanowires

Kristal Yöneliminin ve Sıcaklığın Cu Nano Telinin Mekanik Özelliklerine Etkisinin Moleküler Dinamik Benzetimi ile İncelenmesi

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