Deformation of single crystals, polycrystalline materials, and thin films: A Review

G Yang, SJ Park - Materials, 2019 - mdpi.com
With the rapid development of nano-preparation processes, nanocrystalline materials have
been widely developed in the fields of mechanics, electricity, optics, and thermal physics …

Effects of lattice distortion and chemical short-range order on the mechanisms of deformation in medium entropy alloy CoCrNi

WR Jian, Z Xie, S Xu, Y Su, X Yao, IJ Beyerlein - Acta Materialia, 2020 - Elsevier
As the numbers of medium-to high-entropy alloys being studied and impressive structural
properties they exhibit increase rapidly, questions regarding the role played by their …

Nanoindentation/scratching at finite temperatures: Insights from atomistic-based modeling

SZ Chavoshi, S Xu - Progress in Materials Science, 2019 - Elsevier
Atomistic-based multiscale and molecular dynamics modeling are powerful tools to simulate
the localized strain problems, offering tremendous opportunities to bridge the knowledge …

Role of layer thickness and dislocation distribution in confined layer slip in nanolaminated Nb

WR Jian, S Xu, Y Su, IJ Beyerlein - International Journal of Plasticity, 2022 - Elsevier
Confined layer slip (CLS) is considered as the primary mechanism for plastic deformation in
nanolaminates. It depicts the confined motion of a single dislocation between two parallel …

Frank-Read source operation in six body-centered cubic refractory metals

S Xu, Y Su, LTW Smith, IJ Beyerlein - Journal of the Mechanics and Physics …, 2020 - Elsevier
Abstract The Frank-Read (FR) source is a well-known intragranular dislocation source that
plays an important role in size-dependent dislocation multiplication in metallic crystals. In …

Density functional theory calculations of generalized stacking fault energy surfaces for eight face-centered cubic transition metals

Y Su, S Xu, IJ Beyerlein - Journal of Applied Physics, 2019 - pubs.aip.org
In this work, we use density functional theory to calculate the entire generalized stacking
fault energy (GSFE) surface for eight transition metals with a face-centered cubic structure …

Reversing inverse Hall-Petch and direct computation of Hall-Petch coefficients

CH Henager Jr - Acta Materialia, 2024 - Elsevier
A 2D bicrystal atomistic model of dislocation transmission through a Σ11< 101>{131}
symmetric-tilt grain boundary reveals details of Hall-Petch breakdown in the single …

Comparative modeling of the disregistry and Peierls stress for dissociated edge and screw dislocations in Al

S Xu, JR Mianroodi, A Hunter, B Svendsen… - International Journal of …, 2020 - Elsevier
Many elementary deformation processes in metals involve the motion of dislocations. The
planes of glide and specific processes dislocations prefer depend heavily on their atomic …

Role of stacking fault energy in confined layer slip in nanolaminated Cu

W Ji, WR Jian, Y Su, S Xu, IJ Beyerlein - Journal of Materials Science, 2024 - Springer
Metallic nanolaminates exhibit superior strength compared to their coarsely laminated
counterparts. For layer thicknesses in the range of a few to tens of nanometers, the strength …

Phase-field modeling of the interactions between an edge dislocation and an array of obstacles

S Xu, JY Cheng, Z Li, NA Mara, IJ Beyerlein - Computer Methods in Applied …, 2022 - Elsevier
Obstacles, such as voids and precipitates, are prevalent in crystalline materials. They
strengthen crystals by serving as barriers to dislocation glide. In this work, we develop a …