Texture and microstructure of rolled and annealed tantalum

AbstractPure Ta has been cold rolled and annealed at various temperatures. The crystallographic textures were studied by measuring X-ray pole figures and subsequently calculating the orientation distribution function. The microstructure was investigated via optical microscopy. The rolling textures were explained by dislocation glide on {110}〈111〉, {112}〈111〉 and {123}〈111〉 glide systems. Corresponding simulations were carried out using relaxed constraints Taylor theory. Interpretation of the annealing textures was carried out via continuous recrystallisation in the case of weak deformations and temperatures and via discontinuous recrystallisation for higher rolling degrees and temperatures, respectively.MST/1886