Recrystallization behavior and texture evolution in severely cold drawn CoNiCrMo Alloy

The recrystallization behavior, texture evolution, and grain growth kinetics of cold-drawn MP35N alloy with 77.1% strain were systematically investigated through recrystallization annealing at varying temperatures and durations, employing EBSD and TEM characterization methods. Key findings reveal that annealing parameters significantly influence texture development. As recrystallization temperature increases, the deformation texture gradually diminishes, with orientation evolution primarily following the α-fiber. After 950 °C/1h treatment, the microstructure achieves near-random orientation, with recrystallization nucleation predominantly occurring through sub-grain boundary migration. Notably, deformation twin coarsening was also observed during this process. When maintaining 950 °C, extended holding time drives the recrystallization texture through three distinct stages: initial development of {001}〈110〉 texture, transition to near-random orientation, and subsequent re-emergence of {001}〈110〉 texture. Correspondingly, recrystallized grain growth exhibits rapid initial progression followed by gradual deceleration, consistent with the BECK equation. Additionally, the study observed that multiple annealing twin variants with different orientations can initiate within individual grains.