Theoretical and experimental studies of the dislocation structure at the NiAl-Cr(Mo) interfaces

The dislocation structure at the NiAl/Cr(Mo) interfaces has been studied by high resolution electron microscopy (HREM). The ((1) over bar 10) and(111) cube-on-cube interfaces were examined. Both of the interfaces have been fo und to be partially coherent. Theoretical calculation of the expected dislo cation structure at the interfaces was made based on the CSL/DSC lattice mo del. The experimental observations and theoretical prediction were shown to be in generally good agreement, with some differences with respect to the detailed structure. (C) 2000 Elsevier Science B.V. All rights reserved.