Motion Of Partial Dislocations Research Articles

Germination préférentielle du carbure de chrome sur les dislocations de macles dans les alliages inoxydables du type [formula omitted

The nucleation of chromium-carbide precipitate on the coherent twin boundaries in austenitic Fe-Cr-Ni-C steels of the 18 8 type, is interpreted in relation with the structure of recrystallization twins. Recent observations with the electron microscope suggest that the elastic field of the dislocations piled up on the coherent twin boundaries could induce the movement of partial dislocations during a precipitation heat treatment. The partial dislocations distributed in this way along the coherent twin boundary, constitute sites for the preferential nucleation of the precipitate.