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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....
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Dislocation slip induced lattice rotation in quasi-3D Ni samples during uniaxial tension based on molecular dynamics simulations
Lattice rotation mechanism plays an important role in the plastic deformation and the microstructure evolution of nanocrystalline metals. It assists...
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Hydrogen-Induced Transformation of Dislocation Core in Fe and Its Effect on Dislocation Mobility
In this research, we employ atomistic simulations to scrutinize the impact of hydrogen (H) on dislocation mobilityDislocation mobility in ironIron...
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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,...
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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...
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Mechanism of Solid-Solution Hardening: Quasi-Localization of Dislocation Kinks
AbstractThe sensitivity of the mechanical properties of materials to violations of the translational invariance of the crystal lattice makes it...
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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...
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Pb induced dislocation defects of PtCo systems: Strain-triggered oxygen reduction reaction for PEMFC
Design and development of advanced electrocatalysts with high performance and low Pt consumption are crucial for reducing the kinetic energy barrier...
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Serrated plastic flow in deforming complex concentrated alloys: universal signatures of dislocation avalanches
Under plastic flow, multi-element high/medium-entropy alloys (HEAs/MEAs) commonly exhibit complex intermittent and collective dislocation dynamics...
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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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Harnessing dislocation motion using an electric field
Dislocation motion, an important mechanism underlying crystal plasticity, is critical for the hardening, processing and application of a wide range...
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Finite-temperature screw dislocation core structures and dynamics in α-titanium
A multiscale approach based on molecular dynamics (MD) and kinetic Monte Carlo (kMC) methods is developed to simulate the dynamics of an 〈 a 〉 screw...
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Size-dependent geometrically necessary dislocation structures in single-crystalline tungsten
AbstractWedge indentation experiments were conducted to study the depth dependence of geometrically necessary dislocation (GND) structures in...
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Development of Dislocation and Domain Structures in a Pd3Fe Alloy at Various Strains and Cooling Rates during Stepped Annealing
Abstract —Transmission electron microscopy is used to study the development of dislocation and domain substructures in a Pd 3 Fe alloy in disordered and...
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Plasticity in diamond nanoparticles: dislocations and amorphization during loading and dislocation multiplication during unloading
This work focuses on the mechanical response of cubic-diamond nanoparticles of several sizes when subjected to a planar indenter. Three sequential...
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The microstructure and property evolutions of Inconel718 lattice structure by selective laser melting
Nickel-based lattice materials possess excellent mechanical properties and can be utilized in the fabrication of diverse lightweight structural...
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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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Models of dislocation glide and strengthening mechanisms in bcc complex concentrated alloys
The mechanical response of complex concentrated alloys (CCAs) deviates from that of their pure and dilute counterparts due to the introduction of a...
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Nonequilibrium statistical thermodynamics of thermally activated dislocation ensembles: part 1: subsystem reactions under constrained local equilibrium
This three-part paper lends new insight into the interpretation of internal state variable (ISV) theory and fundamentals of the behavior of thermally...
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Quantifying the Dislocation Cell Contribution to the Yield Strength of 316L Steel
The present work investigates the contribution of dislocation cell to the yield strength of additively manufactured (AM) 316L steel through...
