Atomistic simulation study of the hydrogen diffusion in nickel

The fundamental mechanisms and the conditions in which hydrogen embrittlement (HE) occurs in pure nickel and its alloys has not been fully determined. Several models associated with hydrogen-induced deformation and fracture modes have been proposed. In these models, the transport and concentration of hydrogen play the rate-controlling role in delayed HE. In particular, the kinetics of the embrittlement process is driven by the diffusion of …