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Repeated frictional sliding properties of copper containing nanoscale twins |
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| Authors: | A. Singh N.R. Tao M. Dao S. Suresh |
| Affiliation: | 1. Technical University of Denmark, Department of Mechanical Engineering, Produktionstorvet, Building 425, DK-2800 Kongens Lyngby, Denmark;2. Technical University of Denmark, Center for Electron Nanoscopy, Fysikvej, Building 307, DK-2800 Kongens Lyngby, Denmark;1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;2. State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China;3. Department of Mechanical Engineering, Materials Department, University of California, Santa Barbara, CA 93106-5070, United States |
| Abstract: | Bulk dynamic plastic deformation (DPD) materials comprise a composite structure of nanoscale twin bundles and nanoscale grains. The tribological properties of DPD-processed pure nano-Cu have been investigated in this study and compared with conventional coarse-grained (CG) Cu under both monotonic and repeated frictional sliding. We demonstrate that DPD nano-Cu and CG Cu exhibit steady-state mechanical characteristics after repeated frictional sliding that are similar to those seen in nanotwinned (NT) Cu produced by pulsed electrodeposition. |
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