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Dr. K. Lu Group >> Research Highlight
Ultrahigh Strength and High Electrical Conductivity in Copper
  • Abstract
      Methods used to strengthen metals generally also cause a pronounced decrease in electrical conductivity, so that a tradeoff must be made between conductivity and mechanical strength. We synthesized pure copper samples with a high density of nanoscale growth twins. They showed a tensile strength about 10 times higher than that of conventional coarse-grained copper, while retaining an electrical conductivity comparable to that of pure copper. The ultrahigh strength originates from the effective blockage of dislocation motion by numerous coherent twin boundaries that possess an extremely low electrical resistivity, which is not the case for other types of grain boundaries.
  • Paper Published
      Ultrahigh Strength and High Electrical Conductivity in Copper. [ Full Text ]
    Last modified: 2004/4/16
    Links:
    Revealing the Maximum Strength in Nanotwinned Copper
    Ultrahigh Strength and High Electrical Conductivity in Copper
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    Nitriding Iron at Lower Temperatures
    Superplastic extensibility of nanostructured Cu at room temperature
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    Dr. K. Lu Group, Institute of Metal Research, Chinese Academy of Sciences.
    Address: 72 Wenhua Road, Shenyang, 110016, China