Synthesis of Bulk Nanostructured DO₂₂ Superlattice of Ni₃(Mo, Nb) with High Strength, High Ductility, and High Thermal Stability

Figure 7

Dark-field TEM image showing {111} twins in the deformation substructure of the DO₂₂ superlattice corresponding to 10% tensile elongation at room temperature (the specimen was aged 24 hours at 700°C prior to testing). The inset is the corresponding <110> diffraction pattern showing the twin reflection (T) used to form the image.