Orientation relationships between recrystallization nuclei at triple junctions and deformed structures

Pure aluminium has been cold rolled and partially annealed to yield recrystallization nuclei. The orientations present around a number of triple junctions were characterised using the Electron Back Scattered Diffraction (EBSD) technique before and after the annealing, so that a direct comparison could be made between the orientations in the local deformed structure and the nuclei. It was found that triple junctions were particularly good nucleation sites within the microstructure. Approximately half of the nuclei found had orientations that fell within the scatter from one of the original grains and the remainder were rotated about a pole close to <111> relative to a deformed grain. (C) 2003 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.