{110} slip in Ni 3 Al crept at 760°C along [001]

Ni–23.7at.%A1–0.3at.%Hf single crystals were deformed by creep at 760°C along [001]. A weak-beam electron microscopy study of superdislocations revealed that the primary slip plane is {110} and that superdislocation motion involves extensive antiphase boundary dragging.