Preparation and evaluation of cube texture Ni substrate for YBCO-coated superconductor

The cube-textured Ni tapes were prepared by deformation rolling at room temperature and followed by recrystallization annealing at 950-1000 degrees C for 5-10 h in a high vacuum under 10(-4) Pa. The formation and evolution of rolling and recrystallization textures have been investigated by X-ray pole figures and orientation distribution function (ODF). The results show that the C {112}[1117] and S {123}[634] orientation densities along P-fiber in rolling textures of Ni substrate increase with increasing reductions; and the cube texture volume fraction index increases, phi scan FWHM decreases with increasing heat-treatment temperatures for samples deformed with 95% reduction. In the recrystallization textures, the cube texture component in ODF phi = 0 section deviates from regular positions (0 degrees 0 degrees 0 degrees) in the range of 12-13 degrees at lower heat-treatment temperature. By increasing the heat-treatment temperature up to 1000 degrees C, the deviation from regular position decreases, and sharp cube texture is formed. (C) 2000 Elsevier Science B.V. All rights reserved.