Texture Evolution During Bending of a Single Crystal Copper Nanowire Studied by EBSD and Crystal Plasticity Finite Element Simulations

Unravelling the strain relaxation processes in silicon nanowire arrays by X-ray diffraction

“…However, the spot shapes are significantly different: the spots for S1 are circular, while those corresponding to S5 are ellipsoidal. Similar results have been reported for copper (Weber et al, 2008) and InAs nanowires (Jangir et al, 2017). The ellipsoidal spots have been attributed by these authors to the bending or strain field that develops inside the longer NWs, which control the nanowire merging by mutual misorientation.…”

Overview of constitutive laws, kinematics, homogenization and multiscale methods in crystal plasticity finite-element modeling: Theory, experiments, applications

“…A 23 lm long single-crystalline copper nanowire was produced by focused ion beam fabrication (FIB) [176]. The average cross-section of the specimen was 750 Â 750 nm 2 .…”

“…For stress-strain curves and texture predictions of polycrystals, local models have been shown to be powerful and efficient [108]. However, when the simulation scale becomes smaller such as in studies focusing on nanoindentation [170,171,174], micropillar compression [172], or small-scale beam bending [176], local models can be insufficient due to their inability to describe mechanical size effects.…”

Computational Modeling of Dislocation Slip Mechanisms in Crystal Plasticity: A Short Review

“…Here, the constitutive laws can be totally expressed from the loading history at a stress integration point and are defined as local models. However, experiments show that the mechanical behavior of single crystals is size-dependent and the classical continuum models of plasticity cannot reproduce the details of the behaviour of the material at such small scales, important in nanoindentation [113][114][115][116][117], bend-ing tests for small-scale beam [118][119][120][121][122][123] and micropillar compression [124]. Hall [31] and Petch [32] introduced the grain size dependence of the flow stress through an empirical relation.…”