Geometrically necessary dislocations and related kinematic hardening in gradient grained materials: A nonlocal crystal plasticity study
Gradient grained metals whose microstructure is characterized by a spatially graded grain
size distribution show a better strength-ductility combination than their homogeneous …
size distribution show a better strength-ductility combination than their homogeneous …
Dislocation–grain boundary interactions: Recent advances on the underlying mechanisms studied via nanoindentation testing
To comprehend the mechanical behavior of a polycrystalline material, an in-depth analysis
of individual grain boundary (GB) and dislocation interactions is of prime importance. In the …
of individual grain boundary (GB) and dislocation interactions is of prime importance. In the …
Dislocation–grain boundary interaction-based discrete dislocation dynamics modeling and its application to bicrystals with different misorientations
Grain boundaries (GBs) have a significant influence on the mechanical properties of metallic
materials. It has been a great challenge to describe dislocation interactions with various …
materials. It has been a great challenge to describe dislocation interactions with various …
Multiple mechanism based constitutive modeling of gradient nanograined material
Gradient nano-grained (GNG) materials, inside which grain size increases gradually from
nano-scale in the surface to micro-scale in the substrate, have shown synergetic strength …
nano-scale in the surface to micro-scale in the substrate, have shown synergetic strength …
Multiscale discrete dislocation dynamics study of gradient nano-grained materials
Gradient nano-grained (GNG) metals have shown a better strength-ductility combination
compared to their homogeneous counterparts. In this paper, the mechanical properties and …
compared to their homogeneous counterparts. In this paper, the mechanical properties and …
Hierarchical multiscale crystal plasticity framework for plasticity and strain hardening of multi-principal element alloys
The multi-principal element alloys (MPEAs) exhibit the unprecedented combinations of the
excellent mechanical properties, especially high strength and good ductility. However, the …
excellent mechanical properties, especially high strength and good ductility. However, the …
Irradiation hardening behavior of high entropy alloys using random field theory informed discrete dislocation dynamics simulation
High entropy alloys (HEAs) exhibit outstanding radiation resistance over traditional alloys
owing to severe lattice distortion, and therefore, would be regarded as candidate materials …
owing to severe lattice distortion, and therefore, would be regarded as candidate materials …
Pop-in phenomenon as a fundamental plasticity probed by nanoindentation technique
T Ohmura, M Wakeda - Materials, 2021 - mdpi.com
The attractive strain burst phenomenon, so-called “pop-in”, during indentation-induced
deformation at a very small scale is discussed as a fundamental deformation behavior in …
deformation at a very small scale is discussed as a fundamental deformation behavior in …
Size-dependent yield stress in ultrafine-grained polycrystals: A multiscale discrete dislocation dynamics study
In this study, the effects of grain size and dislocation source properties on the yield stress of
ultrafine-grained (UFG) polycrystals were examined using three-dimensional multiscale …
ultrafine-grained (UFG) polycrystals were examined using three-dimensional multiscale …
Dislocation-grain boundary interaction in metallic materials: Competition between dislocation transmission and dislocation source activation
Dislocation transmission across grain boundary (GB) and activation of dislocation source in
adjacent grains are considered common features of dislocation-GB interactions in regulating …
adjacent grains are considered common features of dislocation-GB interactions in regulating …