Synergistic effects of twin boundary and phase boundary for enhancing ultimate strength and ductility of lamellar TiAl single crystals

H Xiang, W Guo - International Journal of Plasticity, 2022 - Elsevier
The strength-ductility trade-off is a long-standing challenge in engineering and material
sciences. The introductions of twin boundary or phase boundary in materials have been …

The effect of microstructure on the relationship between grain boundary sliding and slip transmission in high purity aluminum

MA Linne, TR Bieler, S Daly - International Journal of Plasticity, 2020 - Elsevier
The relationship between grain boundary sliding (GBS) and slip transmission is investigated
experimentally at grain boundaries in 99.99% aluminum with a through-thickness, coarse …

Dislocation pileups in small grains

R Schouwenaars, LAI Kestens - International Journal of Plasticity, 2023 - Elsevier
While the grain size effect (GSE) is universally observed in polycrystalline metals and alloys,
extended dislocation pileups (DPUs) at grain boundaries (GBs) are rarely observed …

[HTML][HTML] Stresses at grain boundaries: The maximum incompatibility stress in an infinitely extended elastic bicrystal under uniaxial loading

K Liu, MHF Sluiter - Scripta Materialia, 2023 - Elsevier
In a material under stress, grain boundaries may give rise to stress discontinuities. Stress
localization is crucial to materials' behavior such as segregation, precipitation, and void …

A mesoscale continuum approach of dislocation dynamics and the approximation by a Runge-Kutta discontinuous Galerkin method

K Schulz, L Wagner, C Wieners - International Journal of Plasticity, 2019 - Elsevier
We consider a mesoscale continuum model for the evolution of dislocation density in small-
strain crystal plasticity. The model is based on the continuum dislocation dynamics theory …

Ni-doping effect on spark-plasma sintering of tungsten compacts: Synergy of grain boundary strengthening and secondary phase formation for mechanical behavior …

B Guennec, D Tingaud, R Pires-Brazuna… - Journal of Alloys and …, 2023 - Elsevier
Pure tungsten is known to be a strong material but very brittle, due to its grain boundary
structure. In a quest for improvement of the cold-work capacity of tungsten alloys, pure …

Suppression of shear localization in nanocrystalline Al–Ni–Ce via segregation engineering

GH Balbus, F Wang, DS Gianola - Acta Materialia, 2020 - Elsevier
Shear localization in nanocrystalline metals is a severely limiting factor precluding their use
as practical engineering materials. While several strategies exist to enhance the thermal and …

Energy variation and stress fields of spherical inclusions with eigenstrain in three-dimensional anisotropic bi-materials

T Richeton - International Journal of Solids and Structures, 2024 - Elsevier
In this study, expressions for the interior stress fields of a spherical inclusion with uniform
eigenstrain embedded in an anisotropic bi-material featuring a planar interface are derived …

Surface effects on image stresses and dislocation pile-ups in anisotropic bi-crystals

X Chen, T Richeton, C Motz, S Berbenni - International Journal of Plasticity, 2021 - Elsevier
Based on the image decomposition method and the Leknitskii-Eshelby-Stroh (LES)
formalism, the effects of surface conditions and misorientation on the dislocation image …

[HTML][HTML] On the effect of elastic anisotropy and polarizability on solute segregation at low-angle grain boundaries

J Petrazoller, J Guénolé, S Berbenni… - Computational Materials …, 2025 - Elsevier
Solute segregation towards grain boundaries is investigated by modeling solute atoms as
elastic dipoles interacting with the strain fields of symmetric tilt low-angle grain boundaries …