2005 Volume 46 Issue 2 Pages 349-354
Texture formation in pure silver was investigated in order to obtain sharply Brass {011}⟨211⟩ type textured silver sheet that can be used as a substrate for Y-123 superconducting coated tapes without any buffer layers.
The feature of recrystallization texture after the two-step annealing appeared as two peaks close to Goss {011}⟨100⟩ orientation and Brass {011}⟨211⟩ orientation respectively with other weak components along α-fiber in specimens rolled at room temperature, and only one peak close to Brass {011}⟨211⟩ orientation with weak components limited to cube orientation, rotated cube orientation and orientation close to Copper {112}⟨111⟩ orientation in those warm rolled at 150°C. By using the improved metallurgical processing, a very sharp Brass {011}⟨211⟩ type texture has been successfully realized in specimen, which was cast in vacuum, warm rolled by 92% at 150°C and subsequently annealed as 200°C–20 min + 800°C–180 min in nitrogen. There are some critical conditions on the formation of sharp Brass {011}⟨211⟩ type recrystallization texture: a low oxygen content in the starting material, elevated rolling temperature, and the selection of lower primary recrystallization temperature of two-step annealing process.
