Abstract
Understanding of the dislocation motion in nickel-base superalloy is very important to predict the lifetime of gas-turbine blades. γ' phase in nickel-base superalloy acts an strong obstacle to the dislocations, and, in some cases, stops the dislocation motion. In this paper, we performed a molecular dynamics simulation of dislocations motion in pure nickel matrix containing of one γ' particle. In the simulation, straight edge dislocation glides along the slip plane to contact with the γ' phase under shear stress loading. Subsequently we can observed that the motion and shape of the dislocation are affected by the γ' particle.
