The mobility of dislocations was investigated by means of in situ transmission electron microscopy of dislocation motion in monocrystalline thin foils, transmission electron microscopy of dislocation configurations following the deformation of bulk single crystals, atomic force microscopy of slip traces on deformed bulk single crystals, and in situ optical microscopy of slip traces on bulk single crystals during plastic deformation. The results yielded information on the activated glide planes, Burgers vectors, glide mode (concentrated, finely-distributed, smooth, jerky) and specific energy of antiphase boundaries. Variations in the macroscopic plastic behavior and in the glide modes, at 300 to 973K, were considered in terms of the observed dislocation mechanisms.

Dislocation Processes in Fe3Al Investigated by Transmission Electron, Scanning Force and Optical Microscopy. A.Brinck, C.Engelke, H.Neuhauser, G.Molenat, H.Rosner, E.Langmaack, E.Nembach: Materials Science and Engineering A, 1998, 258[1-2], 32-6