Title :
Dispersion Strengthened Nb 3Sn Wire
Author :
Chen, J. ; Han, K. ; Kalu, P.N. ; Markiewicz, W.D.
Author_Institution :
National High Magnetic Field Lab., Tallahassee
fDate :
6/1/2007 12:00:00 AM
Abstract :
Dispersion strengthened Nb3Sn and regular Nb3Sn composites were fabricated. Their mechanical and superconducting properties were measured and compared. An increase in strength up to 10% and Jc (18 T, 4.2 K) up to 28% was achieved. The nanoparticle strengthened Cu, as a replacement of Cu, could be co-deformed with Nb to make Nb3Sn wire without changing the volume fractions of Nb and Sn and heat treatment conditions. The paper argues that nanoparticle pining effects play a major role in improvement of the properties.
Keywords :
composite superconductors; critical currents; dispersion hardening; heat treatment; nanoparticles; niobium alloys; superconducting tapes; tin alloys; type II superconductors; Cu-Nb3Sn; Nb3Sn; dispersion strengthening; heat treatment; magnetic flux density 18 T; nanoparticles; superconducting wires; temperature 4.2 K; Heat treatment; Helium; High temperature superconductors; Magnetic fields; Mechanical factors; Mechanical variables measurement; Nanoparticles; Niobium; Superconducting filaments and wires; Tin; Critical current; Nb $_{3}$Sn superconductor; stress-strain characteristics;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2007.899568
