Journal
JOURNAL OF APPLIED PHYSICS
Volume 115, Issue 19, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4874655
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- Russian Ministry of Education within the basic part of the program for universities
- Russian Federal Ministry for Education and Science [14.B25.31.0017]
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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 790-840MPa, enhanced electrical conductivity of 81%-85% IACS and thermal stability up to 500 degrees C. The contributions of grain refinement and precipitation to enhanced properties of nanostructured alloy are discussed. (C) 2014 AIP Publishing LLC.
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