ABSTRACT
Microstructures and textures of a Zr702 sheet subjected to slow cooling (air cooling (AC) and furnace cooling (FC)) from a near β-transus temperature (980°C) were characterised by electron channelling contrast imaging and electron backscatter diffraction techniques. Results show that textural intensities of both the AC and the FC are markedly higher than that of the initial specimen and the FC specimen owns the strongest texture. After both the heat treatments, the initial bimodal basal textural features are retained with the recrystallisation textural component (0°, 30°, 30°) becoming dominant but the deformation textural component (0°, 30°, 0/60°) largely weakened. The textural intensification is attributed to strong variant selection during the β → α phase transformation and slow cooling-induced sufficient growth of residual prior α grains.
Acknowledgements
Ms. Tingting Wang is acknowledged for providing assistance in post-processing EBSD data. The reviewers of this paper are also gratefully appreciated for their critical comments.
Disclosure statement
No potential conflict of interest was reported by the authors.
ORCID
Linjiang Chai http://orcid.org/0000-0001-9750-6259
Ning Guo http://orcid.org/0000-0003-0462-1923