Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 745, Issue -, Pages 55-62Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2018.02.215
Keywords
Cu alloys; Nanocrystalline metal; Mechanical properties; Electrical conductivity
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Funding
- China Scholarship Council [201606230127]
- National Natural Science Foundation of China (NSFC Project) [51271115]
- U.S. National Science Foundation [CMMI-1601087]
- Directorate For Engineering [1601087] Funding Source: National Science Foundation
- Div Of Civil, Mechanical, & Manufact Inn [1601087] Funding Source: National Science Foundation
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We report on a study aimed at simultaneously achieving high strength, high electrical conductivity and high thermal stability in bulk nanocrystalline (NC) Cu-NbC nanocomposites. We describe an approach that involves adding NbC nanoparticles (similar to 7 nm) into a nanocrystalline Cu matrix (similar to 96 nm) via in-situ formation during sintering of high energy mechanically milled powder into a compact. Our results show that the presence of thermally stable NbC nanoparticles in the bulk NC Cu-NbC nanocomposite contributes to a high tensile strength (868 MPa) in combination with a thermally stable nanocrystalline Cu matrix, and a high electrical conductivity of similar to 56% IACS (International Annealed Copper Standard). (c) 2018 Elsevier B.V. All rights reserved.
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