Synergistic effects of twin boundary and phase boundary for enhancing ultimate strength and ductility of lamellar TiAl single crystals
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 …
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
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 …
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 …
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 …
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 …
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 …
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
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 …
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 …
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 …
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
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 …
elastic dipoles interacting with the strain fields of symmetric tilt low-angle grain boundaries …