Journal article
Ultra-low-angle boundary networks within recrystallizing grains
Department of Physics, Technical University of Denmark1
Neutrons and X-rays for Materials Physics, Department of Physics, Technical University of Denmark2
Department of Wind Energy, Technical University of Denmark3
Materials science and characterization, Department of Wind Energy, Technical University of Denmark4
European Synchrotron Radiation Facility5
DTU Danchip, Technical University of Denmark6
We present direct evidence of a network of well-defined ultra-low-angle boundaries in bulk recrystallizing grains of 99.5% pure aluminium (AA1050) by means of a new, three-dimensional X-ray mapping technique; dark-field X-ray microscopy. These boundaries separate lattice orientation differences on the order of 0.05° and thus subdivide the recrystallizing grain into 2–7 μm wide domains.
During further annealing the orientation differences decrease and the overall structure become more uniform while the network remains. It is observed that the morphology of the grain boundaries surrounding the recrystallizing grains relate to the intragranular network and effects hereof on the boundary migration is discussed.
| Language: | English |
|---|---|
| Year: | 2017 |
| Pages: | 87-91 |
| ISSN: | 18728456 and 13596462 |
| Types: | Journal article |
| DOI: | 10.1016/j.scriptamat.2017.06.016 |
| ORCIDs: | Ahl, Sonja Rosenlund , Zhang, Yubin , Stöhr, Frederik , Juul Jensen, Dorte and Poulsen, Henning Friis |
