Materials Science Forum, Vol.408-4, 901-906, 2002
Recrystallization textures in some hexagonal alloys
The sequence of the mechanisms responsible for the development of the recrystallization texture is stated for titanium on the basis of microstructural and textural data recorded at different stages of primary recrystallization and grain growth. The major texture change (i.e. the well-known 30degrees rotation around c axes) results from the grain growth stage while primary recrystallization induces only slight modifications, due to a significant activity of in-situ recrystallization. An important point to be noticed is the particular behavior of the orientations characterized by twinning activity during the prior deformation, which disappear in the very first stage of primary recrystallization, with nevertheless a quite limited incidence on the global texture of titanium due to the low volume fraction concerned. Beyond the specificities of each material, similarities can be found between titanium and other hexagonal metals or alloys like zirconium and zinc, concerning the particular behavior of twinning related orientations for example but also concerning the global texture change occurring mainly as a result of grain growth.