Effects of annealing temperature on microstructure and properties of pure copper wires containing unidirectional fibrous crystals fabricated by unidirectional continuous casting process and heavy deformation below recrystallization temperature were investigated. The copper wire was annealed in a vacuum firing furnace for 1 h at 200, 300, 400, and 500C: respectively, then was cooled down in the furnace. By observing the microstructure and analyzing the mechanical properties and electrical conductivity of the...