Mise en évidence de macles de déformation dans un superalliage monogranulaire γ/γ′ à base de nickel

Abstract

An oriented single grain of a γ/γ′ superalloy is deformed by dynamic compression (12%, 20 °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 γ corridors between γ′ precipitates.