A deformation-processed Al-matrix/Ca-nanofilamentary composite with low density, high strength, and high conductivity
Abstract
Light, strong materials with high conductivity are desired for many applications such as power transmission conductors, fly-by-wire systems, and downhole power feeds. However, it is difficult to obtain both high strength and high conductivity simultaneously in a material. In this study, an Al/Ca (20 vol%) nanofilamentary metal-metal composite was produced by powder metallurgy and severe plastic deformation. Fine Ca metal powders (~200 µm) were produced by centrifugal atomization, mixed with pure Al powder, and deformed by warm extrusion, swaging, and wire drawing to a true strain of 12.9. The Ca powder particles became fine Ca nanofilaments that reinforce the composite substantially by interface strengthening. The conductivity of the composite is slightly lower than the rule-of-mixtures prediction due to minor quantities of impurity inclusions. As a result, the elevated temperature performance of this composite was also evaluated by differential scanning calorimetry and resistivity measurements.
- Authors:
-
- Univ. of Michigan, Ann Arbor, MI (United States)
- Ames Lab. and Iowa State Univ., Ames, IA (United States)
- Ames Lab., Ames, IA (United States)
- Technische Univ. Berlin, Berlin (Germany)
- Publication Date:
- Research Org.:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Org.:
- USDOE Office of Electricity (OE)
- OSTI Identifier:
- 1357788
- Alternate Identifier(s):
- OSTI ID: 1415894
- Report Number(s):
- IS-J-9279
Journal ID: ISSN 0921-5093; PII: S0921509317303003; TRN: US1702302
- Grant/Contract Number:
- AC02-07CH11358
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
- Additional Journal Information:
- Journal Volume: 690; Journal Issue: C; Journal ID: ISSN 0921-5093
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; metal matrix composite (MMCs); powder processing; severe plastic deformation; strength; electrical resistivity/conductivity
Citation Formats
Tian, Liang, Russell, Alan, Riedemann, Trevor, Mueller, Soeren, and Anderson, Iver. A deformation-processed Al-matrix/Ca-nanofilamentary composite with low density, high strength, and high conductivity. United States: N. p., 2017.
Web. doi:10.1016/j.msea.2017.03.010.
Tian, Liang, Russell, Alan, Riedemann, Trevor, Mueller, Soeren, & Anderson, Iver. A deformation-processed Al-matrix/Ca-nanofilamentary composite with low density, high strength, and high conductivity. United States. https://doi.org/10.1016/j.msea.2017.03.010
Tian, Liang, Russell, Alan, Riedemann, Trevor, Mueller, Soeren, and Anderson, Iver. Mon .
"A deformation-processed Al-matrix/Ca-nanofilamentary composite with low density, high strength, and high conductivity". United States. https://doi.org/10.1016/j.msea.2017.03.010. https://www.osti.gov/servlets/purl/1357788.
@article{osti_1357788,
title = {A deformation-processed Al-matrix/Ca-nanofilamentary composite with low density, high strength, and high conductivity},
author = {Tian, Liang and Russell, Alan and Riedemann, Trevor and Mueller, Soeren and Anderson, Iver},
abstractNote = {Light, strong materials with high conductivity are desired for many applications such as power transmission conductors, fly-by-wire systems, and downhole power feeds. However, it is difficult to obtain both high strength and high conductivity simultaneously in a material. In this study, an Al/Ca (20 vol%) nanofilamentary metal-metal composite was produced by powder metallurgy and severe plastic deformation. Fine Ca metal powders (~200 µm) were produced by centrifugal atomization, mixed with pure Al powder, and deformed by warm extrusion, swaging, and wire drawing to a true strain of 12.9. The Ca powder particles became fine Ca nanofilaments that reinforce the composite substantially by interface strengthening. The conductivity of the composite is slightly lower than the rule-of-mixtures prediction due to minor quantities of impurity inclusions. As a result, the elevated temperature performance of this composite was also evaluated by differential scanning calorimetry and resistivity measurements.},
doi = {10.1016/j.msea.2017.03.010},
journal = {Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing},
number = C,
volume = 690,
place = {United States},
year = {Mon Mar 06 00:00:00 EST 2017},
month = {Mon Mar 06 00:00:00 EST 2017}
}
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