Search
Search Results
-
The influence of lattice misfit on screw and edge dislocation-controlled solid solution strengthening in Mo-Ti alloys
Mo-Ti alloys form solid solutions over a wide range of compositions, with lattice misfit parameters increasing significantly with titanium content....
-
Lattice dislocation induced misfit dislocation evolution in semi-coherent {111} bimetal interfaces
The study of dislocation plasticity mediated by semi-coherent interfaces can aid in the design of certain heterostructured materials, such as...
-
Dislocation-precipitate interactions in crystals: from the BKS model to collective dislocation dynamics
The increase in the yield stress due to the presence of obstacles to dislocation motion such as precipitates is a multiscale phenomenon. The details...
-
Descriptions of Dislocation via First Principles Calculations
Dislocation is one of the most representative plastons to determine the mechanical properties of crystalline materials. In this section, several...
-
A model for physical dislocation transmission through grain boundaries and its implementation in a discrete dislocation dynamics tool
The mechanical behavior of most metals in engineering applications is dominated by the grain size. Physics-based models of the interaction between...
-
Multi-scale modeling of solute atom strengthening using 3D discrete dislocation dynamics
Discrete dislocation dynamics (DDD) codes enable researchers and scientists to explore the mechanical behavior of a material as impacted by its...
-
Unraveling dislocation-based strengthening in refractory multi-principal element alloys
Refractory multi-principal element alloys (RMPEAs) draw great interest with their superior mechanical properties and extremely high melting points,...
-
-
Dislocation and strain map** in metamorphic parabolic-graded InGaAs buffers on GaAs
We investigate different architectures for parabolic-graded InGaAs metamorphic buffers grown on GaAs using transmission electron microscopy...
-
Screw vs. edge dislocation strengthening in body-centered-cubic high entropy alloys and implications for guided alloy design
Body-centered-cubic (BCC) high entropy alloys (HEAs) can show exceptionally high strength up to high temperatures. Mechanistic theories are needed to...
-
Effect of interface structure on dislocation glide behavior in nanolaminates
The ultra-high strength of nanolaminates arises from the effect of the fine layering on dislocation motion. Using atomistic simulations, we...
-
Strengthening from dislocation restructuring and local climb at platelet linear complexions in Al-Cu alloys
Stress-driven segregation at dislocations can lead to structural transitions between different linear complexion states. In this work, we examine how...
-
Axial misfit stress relaxation in core–shell nanowires with polyhedral cores through the nucleation of misfit prismatic dislocation loops
The theoretical model of axial misfit stress relaxation in polyhedral core–shell nanowires through the nucleation of prismatic dislocation loops is...
-
In Situ Investigation of TCP Phase Formation, Stress Relaxation and γ/γ′ Lattice Misfit Evolution in Fourth Generation Single Crystal Ni-Base Superalloys by X-Ray High Temperature Diffraction
In nickel-based superalloys, the lattice misfit between the γ and γ ′ phases and the propensity to TCP phase formation at service temperatures...
-
Role of interfaces on the mechanical response of accumulative roll bonded nanometallic laminates investigated via dislocation dynamics simulations
Unraveling the effects of continuous dislocation interactions with interfaces, particularly at the nanometer length scales, is key to a broader...
-
Interactions between Pre-strain and Dislocation Structures and Its Effect on the Hydrogen Trap** Behaviors
This work investigated the effect of pre-strain and microstructures and their interactions on hydrogen trap** behaviors in case of 1-GPa...
-
Effect of Grain Size and Dislocation Density on the Work Hardening Behavior of SS 304
In the present investigation, grain size and dislocation density in SS 304 metastable austenitic stainless steel were varied by annealing the...
-
The interpretation of discrete dislocation dynamics simulation data: verification and validation (V&V) with application to size/scale effects and free surface effects
Simulation models are used to emulate real-world phenomena, and errors are inevitable in the numerical computation process. Owing to that, simulation...
-
-
Nano-indentation study of dislocation evolution in GaN-based laser diodes
The slip systems and motion behavior of dislocations induced by nano-indentation technique in GaN-based LDs were investigated. Dislocations with...
