Collision cascades near a 1/2⟨111⟩{110} edge dipole in alpha-iron have been studied using molecular dynamics simulations for recoil energy of 20 keV and two temperatures, K 300 K. These show that the collision cascade induces migration dislocations through glide along its slip plane. The motion starts at peak expands time scale much longer than duration, until restoring equilibrium distance dip...

Abstract Dislocation engineering in crystalline materials is essential when designing for a large range of applications. Segregation additional elements at dislocations frequently used to modify the influence on material properties. Thus, dislocation elastic field impurity segregation major interest, as its understanding should lead solutions that improve We report experimental study atomic cor...

A mechanically coupled diffusion model combined with finite element formulation is developed to study the influence of dislocations on ion in lithium-ion batteries. The dislocation modeled by regularized eigenstrain based a non-singular continuum theory. validated analytical solution stress field edge and for stress-dependent equilibrium concentration around dislocation. Simulation results LiMn...

Equilibrium configurations of edge dislocation pileups against a circular inhomogeneity or a bimetallic interface are determined numerically for a given number N of dislocations, the applied shear stress τ , the size of the inhomogeneity, and the degree of material disparity. The increase of applied stress moves a pileup closer to the inhomogeneity and increases the density of dislocations with...

Predicting the rate at which dislocations overcome obstacles is key to understanding the microscopic features that govern the plastic flow of modern alloys. In this spirit, the current manuscript examines the rate at which an edge dislocation overcomes an obstacle in aluminum. Predictions were made using different popular variants of Harmonic Transition State Theory (HTST) and compared to those...