Superplasticity of the ceramic compound YBa2Cu3O(7-x)

The possibility of achieving the superplastic transition in YBa2Cu3O(7-x) ceramic is investigated experimentally in an effort to find ways to improve the processability of this promising superconducting material. It is found that during the deformation of YBa2Cu3O(7-x) in the temperature range 900-950 C at a rate of 0.0001/s, superplastic deformation is achieved after dynamic recrystallization. A similar sequence of dynamic recrystallization and superplastic deformation is observed (although at lower homological temperatures) during the hot deformation of metals and intermetallics.