La transformation de Rowland: analyse cristallographique de modèles de sphères dures; application à l'étude des relations d'orientation obtenues lors de la recristallisation de Monocristaux d'aluminium

In order to study the nucleation process in recrystallization, the orientation relationships between the deformed matrix and the new crystals for the case of single-crystal Al elongated at 78 K have been established. The coincidence relations determined experimentally have been reproduced with hard-sphere models for the single Rowland transformation and for what is called a `double Rowland transformation'. The single Rowland transformation is analysed in terms of a military transformation: it is the product of a pure shear (Verbraak transformation) and a rigid rotation. The orientation change resulting from a double Verbraak transformation can be described by either a 34° rotation about an axis close to <112> or by a mirror plane close to {153}.