Novel RE-texture component and bimodal microstructure formation during post-annealing of an accumulative back extruded WE43 alloy

This study offers a new approach to attain recrystallized textures with rare-earth (RE) texture components through post-annealing of accumulative back extruded microstructures. It was found that annealing of deformed microstructures at 400 degrees C for 30 min can lead to a homogeneous microstructure with RE texture components formed upon precipitation of rE-rich particles and further stimulation of new grains nucleation. Further increasing the annealing time to 240 min (or increasing temperature to 450 degrees C) resulted in vanishing of REtexture component and a significant rise in the texture intensity.

Automated summary

This study presents a new method to obtain recrystallized textures with rare-earth (RE) texture components through post-annealing of accumulative back extruded microstructures. It was observed that annealing at 400 degrees C for 30 min resulted in a homogeneous microstructure with RE texture components formed through precipitation of RE-rich particles and nucleation of new grains. Increasing the annealing time to 240 min (or raising the temperature to 450 degrees C) led to disappearance of the RE texture component and a significant increase in texture intensity.