Annealing effects on the microstructure, electrical, and magnetic properties of jelly-rolled Cu–Nb composite wires

Autor: Maria José Ramos Sandim, Luis Ghivelder, Iwaki Genzo, Carlos Y. Shigue, H. H. Bernardi, M.G. das Virgens, Satoshi Awaji, Hugo Ricardo Zschommler Sandim, Kazuo Watanabe
Rok vydání: 2004
Předmět:
Zdroj: Superconductor Science and Technology. 18:35-40
ISSN: 1361-6668
0953-2048
DOI: 10.1088/0953-2048/18/1/006
Popis: We report on the annealing effects on the microstructure, electrical, and magnetic properties of jelly-rolled Cu –xvol %Nb (x = 25, 33, 50, 63) composite wires, a promising material to be used in high-field magnets. During annealing at temperatures as high as 850 °C, noticeable changes take place in the microstructure, including recovery and recrystallization of copper and niobium, followed by partial spheroidization and further coarsening of niobium filaments. The influence of these microstructural changes on the electrical and magnetic properties of jelly-rolled Cu–Nb composite wires is discussed.
Databáze: OpenAIRE