As a series study of the discrete dislocation dynamics simulations of the interfacial dislocation network in Ni-based superalloys, various discrete dislocation dynamics simulations were made of the stability of dislocation networks and its interaction with a prismatic dislocation loop. Dislocations could not keep its network shape if the line and Burgers vectors were set to the experimental observation, while stable networks with the vectors and slip plane reported in molecular dynamics simulations could be obtained. Then a prismatic dislocation loop was collided with the networks, showing that a mesh knot was replaced by the prismatic loop as reported in previous molecular dynamics simulations. The interaction could be explained by junction formation between the network and prismatic loop, so that it could be concluded that no special modelling was necessary for this interaction between the network and prismatic loop.

Discrete Dislocation Dynamics Study on Interaction between Prismatic Dislocation Loop and Interfacial Network Dislocations. K.Yashiro, M.Konishi, Y.Tomita: Computational Materials Science, 2008, 43[3], 481-8