Rolling and recrystailization textures in a Ni substrate deformed to 80%~95% reduction have been investigated systematically in the processing of a high quality cube textured substrate for YBCO thick films. The starting high purity (99. 99%) Ni sheetwas deformed at room temperature to 80%, 89%, 93% and 95% reduction. The sample with 95% reduction was heat treated at750℃,800℃, 850℃, 900℃, 950℃ and 1 000℃ for 5h. The formation and evolution of rolling and recrystallization textures wereinvestigated by X ray P...