JA El-Awady - Nature communications, 2015 - nature.com
Size-affected dislocation-mediated plasticity is important in a wide range of materials and technologies. Here we develop a generalized size-dependent dislocation-based model that …
B Devincre, T Hoc, L Kubin - Science, 2008 - science.org
Predicting the strain hardening properties of crystals constitutes a long-standing challenge for dislocation theory. The main difficulty resides in the integration of dislocation processes …
ZQ Wang, IJ Beyerlein, R LeSar - International Journal of Plasticity, 2009 - Elsevier
3D dislocation dynamics (DD) simulations are employed to study the plastic anisotropy of a single crystal of copper under a wide range of high strain rates, 104–106s-1. The …
When metals plastically deform, the density of line defects called dislocations increases and the microstructure is continuously refined, leading to the strain hardening behavior. Using …
W Cai, VV Bulatov - Materials Science and Engineering: A, 2004 - Elsevier
Prediction of the plastic deformation behavior of single crystals based on the collective dynamics of dislocations has been a challenge for computational materials science for a …
A Arsenlis, DM Parks - Journal of the Mechanics and Physics of Solids, 2002 - Elsevier
Dislocations are the most important material defects in crystal plasticity, and although dislocation mechanics has long been understood as the underlying physical basis for …
Three-dimensional (3-D) dislocation dynamics simulations were employed to examine the fundamental mechanisms of plasticity in small-scale face-centered cubic single crystals …
Crystal plasticity is mediated through dislocations, which form knotted configurations in a complex energy landscape. Once they disentangle and move, they may also be impeded by …
N Bertin, RB Sills, W Cai - Annual Review of Materials Research, 2020 - annualreviews.org
Dislocations play a vital role in the mechanical behavior of crystalline materials during deformation. To capture dislocation phenomena across all relevant scales, a multiscale …