Influence of processing parameters on the texture formation in powder metallurgic Ni-5at.%W substrate tapes

Influence of cold rolling total thickness reduction, annealing temperature and annealing time on the textures in powder metallurgie Ni-5at.%W substrate tapes have been quantitatively investigated with the EBSD (Electron Back-Scattered Diffraction) technique. A "copper" type-like texture consisting of {1 2 3}<6 3-4>+{0 1 -1}<3-1 -1>+{1 -1 2}<1 -1 -1> has been found in the as-rolled tapes. This texture was much intensive in the tape at 99% thickness reduction than in the tape at 87% thickness reduction. The 99% reduction tape showed a higher fraction and sharper cube texture than the 87% reduction tape after annealing treatment. In addition, annealing at 1000°C was much favourable for the cube texture formation than annealing at 950°C and resulted in a higher cube texture fraction.