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Multi-scale investigation of short-range order and dislocation glide in MoNbTi and TaNbTi multi-principal element alloys
Refractory multi-principal element alloys (RMPEAs) are promising materials for high-temperature structural applications. Here, we investigate the...
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Cell structure formation in a two-dimensional density-based dislocation dynamics model
Cellular patterns formed by self-organization of dislocations are a most conspicuous feature of dislocation microstructure evolution during plastic...
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Nonequilibrium statistical thermodynamics of thermally activated dislocation ensembles: part 3—Taylor–Quinney coefficient, size effects and generalized normality
The nonequilibrium statistical thermodynamics framework for thermally activated dislocation ensembles introduced in Parts 1 and 2 is applied to...
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Making sense of dislocation correlations
Since crystal plasticity is the result of moving and interacting dislocations, it seems self-evident that continuum plasticity should in principle be...
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Effects of rhodium do** on dislocation nucleation in a [001] SrNi2P2 single crystal under spherical nanoindentation
Nanoindentation was performed on SrNi 2 P 2 single crystals and their dilute solid solutions, Sr(Ni 1− x Rh x ) 2 P 2 ( x = 0 ~ 0.055), under [001] loading to...
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The kinetics of static recovery by dislocation climb
The initial microstructure of a wide range of structural materials is conditioned by thermo-mechanical treatments such as hot-working, tempering, or...
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Composition influence on edge dislocation mobility in an FCC high-entropy alloy
Molecular dynamics simulations were conducted to investigate the mobility of edge dislocation on FeNiCrCoCu FCC high-entropy alloy. We calculated the...
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A Model for Predicting the Size of Austenite Grains upon Hot Deformation of Low-Alloyed Steels Considering the Evolution of the Dislocation Structure
Abstract—A model is proposed for describing the behavior of the average size of austenitic grains and the dislocation structure of low-alloyed steels...
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Uncovering dislocation-precipitate interactions during tensile loading of wire arc additive manufactured nickel-aluminum-bronze
Dislocation-precipitate interactions of a wire arc additive manufactured nickel-aluminum-bronze alloy subjected to uniaxial tensile loading were...
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Phase-field dislocation modeling of cross-slip
The phase-field dislocation dynamics (PFDD) model is extended to simulate cross-slip in body-centered cubic materials. The model makes use of a...
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Generalized stacking fault energy surface mismatch and dislocation transformation
Even though the fundamental rules governing dislocation activities have been well established in the past century, we report a phenomenon,...
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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...
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On continuum simulations of the evolution of faulted and perfect dislocation loops in silicon during post-implantation annealing
AbstractPredictive models of the damage evolution during post-implantation annealing are important for predicting the performance of final devices....
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Molecular dynamics simulations of dislocation–coherent twin boundary interaction in face-centered cubic metals
The interaction mechanisms between dislocations and coherent twin boundary (CTB) were determined with molecular dynamics simulations. The dislocation...
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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...
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Transient Stress Relaxation Test to Identify Material Constants in Dislocation Density Model
The constitutive behavior of metallic materials in terms of dislocation kinetics can be successfully described using a dislocation density-based...
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Role of Crystal Orientation on Dislocation Nucleation in Zr: A Molecular Dynamics Study
Plastic deformation is known to be highly orientation sensitive. This orientation sensitivity of deformation gets further accentuated in case of...
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Deformation twinning to dislocation slip transition in single-crystal tantalum under dynamic compression
The deformation twinning to dislocation slip transition is observed in large-scale molecular dynamics simulations of single-crystal tantalum under...
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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...
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Isoelectronic aluminum-doped gallium nitride alpha-voltaic cell with efficiency exceeding 4.5%
Although alpha-voltaic cells have shown great potential in unattended miniaturized systems for compact, long-lifetime and independence of external...
