"Hydrogen-Induced Dislocation Nucleation and Plastic Deformation of 〈00" by Jiaqing Li, Ziyue Wu et al.
The grain boundary (GB) plays a crucial role in dominating hydrogen-induced plastic deformation and intergranular failure in polycrystal metals. In the present study, molecular dynamics simulations were employed to study the effects of hydrogen segregation on dislocation plasticity of a series of symmetrical tilt grain boundaries (STGBs) with various hydrogen concentrations. Our study shows that hydrogen both enhances and reduces dislocation nucleation events from STGBs, depending on different G...
Source: uow.edu.au