Necklace formation during dynamic recrystallization: mechanisms and impact on flow behavior

摘要

The aim of the current study was to investigate the nucleation mechanisms of new grains during DRX and the deformation behavior of a necklace structure. the investigations were conducted on ni_3al, because Ni_3Al develops a distinct necklace structure during dynamic recrystallization DRX. Local orien- tation measurements were conducted to determine misorientations between new recrystallized grains and their parent grains. DRX was set off by strain induced bulging of prior grain boundaries.