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Title: Cu/Nb nano-composite wires processed by severe plastic deformation for applications in high pulsed magnets: effects of the multi-scale microstructure on the mechanical properties

Abstract

Copper-based high strength and high electrical conductivity nano-composite wires reinforced by Nb nano-tubes are prepared by severe plastic deformation, applied with an Accumulative Drawing and Bundling process (ADB), for the windings of high pulsed magnets. The ADB process leads to a multi-scale Cu matrix containing up to N = 85{sub 4} (52.2.10{sup 6}) continuous parallel Nb tubes with diameter down to few tens nano-meters. After heavy strain, the Nb nano-tubes exhibit a homogeneous microstructure with grain size below 100 nm. The Cu matrix presents a multi-scale microstructure with multi-modal grain size distribution from the micrometer to the nano-meter range. The use of complementary characterization techniques at the microscopic and macroscopic level (in-situ tensile tests in the TEM, nano-indentation, in-situ tensile tests under high energy synchrotron beam) shed light on the interest of the multi-scale nature of the microstructure to achieve extreme mechanical properties, therefore allowing for design guidelines to further improve these properties. (authors)

Authors:
; ;  [1];  [2];  [3]
  1. Univ Poitiers, ENSMA, CNRS, Inst Pprime, SP2MI, F-86962 Poitiers, (France)
  2. UPS, UJF, INSA, Lab Natl Champs Magnet Intenses, CNRS, F-31400 Toulouse, (France)
  3. CEA Saclay, DEN, DANS, DMN,SRMA, F-91191 Gif Sur Yvette, (France)
Publication Date:
OSTI Identifier:
22273980
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Applied Superconductivity (Print)
Additional Journal Information:
Journal Volume: 22; Journal Issue: 3; Other Information: Country of input: France; 17 refs.; This record replaces 45095213; Journal ID: ISSN 1051-8223
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COMPOSITE MATERIALS; COPPER; DEFORMATION; ELECTRIC CONDUCTIVITY; MAGNETS; MICROSTRUCTURE; NANOSTRUCTURES; NEUTRON BEAMS; NIOBIUM; PLASTICITY; SIZE; TANTALUM; TRANSMISSION ELECTRON MICROSCOPY; WIRES

Citation Formats

Dubois, J. B., Thilly, L., Renault, P.O., Lecouturier, F., and Olier, P. Cu/Nb nano-composite wires processed by severe plastic deformation for applications in high pulsed magnets: effects of the multi-scale microstructure on the mechanical properties. United States: N. p., 2012. Web. doi:10.1109/TASC.2011.2174574.
Dubois, J. B., Thilly, L., Renault, P.O., Lecouturier, F., & Olier, P. Cu/Nb nano-composite wires processed by severe plastic deformation for applications in high pulsed magnets: effects of the multi-scale microstructure on the mechanical properties. United States. doi:10.1109/TASC.2011.2174574.
Dubois, J. B., Thilly, L., Renault, P.O., Lecouturier, F., and Olier, P. Fri . "Cu/Nb nano-composite wires processed by severe plastic deformation for applications in high pulsed magnets: effects of the multi-scale microstructure on the mechanical properties". United States. doi:10.1109/TASC.2011.2174574.
@article{osti_22273980,
title = {Cu/Nb nano-composite wires processed by severe plastic deformation for applications in high pulsed magnets: effects of the multi-scale microstructure on the mechanical properties},
author = {Dubois, J. B. and Thilly, L. and Renault, P.O. and Lecouturier, F. and Olier, P.},
abstractNote = {Copper-based high strength and high electrical conductivity nano-composite wires reinforced by Nb nano-tubes are prepared by severe plastic deformation, applied with an Accumulative Drawing and Bundling process (ADB), for the windings of high pulsed magnets. The ADB process leads to a multi-scale Cu matrix containing up to N = 85{sub 4} (52.2.10{sup 6}) continuous parallel Nb tubes with diameter down to few tens nano-meters. After heavy strain, the Nb nano-tubes exhibit a homogeneous microstructure with grain size below 100 nm. The Cu matrix presents a multi-scale microstructure with multi-modal grain size distribution from the micrometer to the nano-meter range. The use of complementary characterization techniques at the microscopic and macroscopic level (in-situ tensile tests in the TEM, nano-indentation, in-situ tensile tests under high energy synchrotron beam) shed light on the interest of the multi-scale nature of the microstructure to achieve extreme mechanical properties, therefore allowing for design guidelines to further improve these properties. (authors)},
doi = {10.1109/TASC.2011.2174574},
journal = {IEEE Transactions on Applied Superconductivity (Print)},
issn = {1051-8223},
number = 3,
volume = 22,
place = {United States},
year = {2012},
month = {6}
}