Investigating the cross-slip rate in face-centered cubic metals using an atomistic-based cross-slip model in dislocation dynamics simulations

The cross-slip rate of screw segments in dislocation dynamics simulations was calculated using the model Esteban-Manzanares et al. (2020), which is based on a combination harmonic transition state theory and Meyer–Neldel rule. In said model, expressed as function microstructure parameters. particular, prefactor depends nucleation length activation enthalpy, are themselves functions local stress. Malka-Markovitz Mordehai (2019) solved line tension exactly by linearizing interaction force between partials. They obtained analytical expressions for enthalpy general stress state. These were used to evaluate at each simulation step. results quantitative agreement with atomistic simulations.