Title :
Characteristics of High Strength and High Conductivity Cu-Nb Micro-Composites
Author :
Liang, Ming ; Lu, Yafeng ; Chen, Zili ; Li, Chengshan ; Yan, Guo ; Li, Chunguang ; Zhang, Pingxiang
Author_Institution :
Northwest Inst. for Non-ferrous Metal Res., Xi´´an, China
fDate :
6/1/2010 12:00:00 AM
Abstract :
We have fabricated Cu-Nb composites with high strength and high conductivity by bundling and drawing process for their application in high field pulsed magnets. Several kinds of composites are designed for investigation of the filament-size and interface effect on the strength and conductivity. For Cu-Nb micro-composites with a section of 5 mm2 composed of a Cu matrix embedded 5 ?? 107 continuous Nb nano-fibers with a diameter of 100 nm, our results have shown that the ultimate tensile strength reaches 1 GPa while the electrical conductivity is higher than 70% IACS at room temperature. Since the size of Nb filaments is already on a nanometer scale, the size effect on microstructure and property of Cu-Nb composites has been studied.
Keywords :
copper; crystal microstructure; drawing (mechanical); electrical conductivity; fibre reinforced composites; nanofibres; niobium; tensile strength; Cu matrix; Cu-Nb; Nb filaments; bundling process; continuous Nb nanofibers; drawing process; electrical conductivity; filament-size; high conductivity; high field pulsed magnets; high strength; interface effect; microcomposites; microstructure; size 100 nm; size effect; temperature 293 K to 298 K; ultimate tensile strength; Bundling and drawing process; Cu-Nb; electrical conductivity; ultimate tensile strength;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2009.2039703
