Campus Units

Materials Science and Engineering, Ames Laboratory

Document Type

Conference Proceeding

Conference

38th Risø International Symposium on Materials Science

Publication Version

Published Version

Publication Date

2017

Journal or Book Title

IOP Conference Series: Materials Science and Engineering

Volume

219

First Page

012014

DOI

10.1088/1757-899X/219/1/012014

Conference Title

Advanced Metallic Materials by Microstructural Design

Conference Date

September 4-8, 2017

City

Risø, Denmark

Abstract

Efficient long-distance power transmission is necessary as the world continues to implement renewable energy sources, often sited in remote areas. Light, strong, high-conductivity materials are desirable for this application to reduce both construction and operational costs. In this study an Al/Ca (11.5% vol.) composite with nano-filamentary reinforcement was produced by powder metallurgy then extruded, swaged, and wire drawn to a maximum true strain of 12.7. The tensile strength increased exponentially as the filament size was reduced to the sub-micron level. In an effort to improve the conductor's ability to operate at elevated temperatures, the deformation-processed wires were heat-treated at 260°C to transform the Ca-reinforcing filaments to Al2Ca. Such a transformation raised the tensile strength by as much as 28%, and caused little change in ductility, while the electrical conductivity was reduced by only 1% to 3%. Al/Al2Ca composites are compared to existing conductor materials to show how implementation could affect installation and performance.

Comments

This proceeding is published as Czahor, C.F., Anderson, I.E., Riedemann, T.M., and Russell, A.M., “Deformation processed Al/Ca nano-filamentary composite conductors for HVDC applications.” IOP Conference Series: Materials Science and Engineering (219) 2017: 012014, doi:10.1088/1757-899X/219/1/012014. Posted with permission.

Creative Commons License

Creative Commons Attribution 3.0 License
This work is licensed under a Creative Commons Attribution 3.0 License.

Copyright Owner

The Authors

Language

en

File Format

application/pdf

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