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

Volume

20

Issue

3

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

1619

Lastpage

1621

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;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/TASC.2009.2039703

Filename

5422817