Highly curved edge dislocations gliding on primary (111) planes were frequently observed in addition to the dominance of screw dislocations in L12 ordered Ni3Al deformed at 400C, a temperature within the anomalous temperature regime. The detailed analysis of transmission electron microscopic images using tilting experiments proves that the superlattice dislocations of near-edge character contained super-jogs consisting of segments dissociated on both (111) planes and cube cross-slip planes. Based on the transmission electron microscopic observations and on stress calculations two processes were proposed for the formation of the super-jogs: firstly, a double cross-slip process of the screws via the cube cross-slip plane and secondly, the reaction of primary dislocations gliding on (111) with primaries cross-slipped onto (010). Since these super-jogs contained segments on the cube cross-slip plane their mobility was low causing a high friction stress acting on the edge dislocations gliding on (111); as a consequence work hardening would be affected.TEM Study of the Friction Stress Acting on Edge Dislocations in Ni3Al. Rentenberger, C., Karnthaler, H.P.: Intermetallics, 2003, 11[6], 601-9