Nanostructured Cu-Cr alloy with high strength and electrical conductivity

Journal Article · Wed May 21 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4874655· OSTI ID:22275540

Nesterov, K. M. ^[1]; Bourgon, J.; Champion, Y. ^[2]; Valiev, R. Z. ^[1]

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1. Institute of Physics of Advanced Materials, Ufa State Aviation Technical University, Ufa 450000 (Russian Federation)
2. ICMPE-CNRS, Université Paris 12, 6-8 rue Henri Dunant, 94320 Thiais, cedex (France)

The influence of nanostructuring by high pressure torsion (HPT) on strength and electrical conductivity in the Cu-Cr alloy has been investigated. Microstructure of HPT samples was studied by transmission electron microscopy with special attention on precipitation of small chromium particles after various treatments. Effect of dynamic precipitation leading to enhancement of strength and electrical conductivity was observed. It is shown that nanostructuring leads to combination of high ultimate tensile strength of 790–840 MPa, enhanced electrical conductivity of 81%–85% IACS and thermal stability up to 500 °C. The contributions of grain refinement and precipitation to enhanced properties of nanostructured alloy are discussed.

• OSTI ID: 22275540
• Journal Information: Journal of Applied Physics, Vol. 115, Issue 19; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
CHROMIUM
COPPER
ELECTRIC CONDUCTIVITY
GRAIN REFINEMENT
INTERMETALLIC COMPOUNDS
MICROSTRUCTURE
NANOSTRUCTURES
PARTICLES
PHASE STABILITY
PRECIPITATION
TEMPERATURE DEPENDENCE
TENSILE PROPERTIES
TORSION
TRANSMISSION ELECTRON MICROSCOPY