ملخص: Un monograin oriente de superalliage [gamma]/[gamma]' est deforme en compression dynamique (12 %, 20 [deg]C) selon [001]. De fines macles de deformation sont observees pour la premiere fois dans un tel monograin en microscopie electronique a haute resolution. Elles semblent se developper plus facilement dans les couloirs [gamma] separant les precipites [gamma]'.AbstractAn oriented single grain of a [gamma]/[gamma]' superalloy is deformed by dynamic compression (12%, 20 [deg]C) along [001]. Thin deformation twins are observed for the first time in such a single grain using high resolution electron microscopy. They appear to develop more easily in [gamma] corridors between [gamma]' precipitates.

لغة: فرنسية