Journal
PHYSICAL REVIEW LETTERS
Volume 105, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.105.055504
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Funding
- Russian Academy of Sciences
- NSF [0700272]
- Russian Ministry of Science and Education [MK-1702.2010.1]
- RFBR [08-01-00225-a]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [0700272] Funding Source: National Science Foundation
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A new physical mechanism or mode of plastic deformation in nanocrystalline metals and ceramics is suggested and theoretically described. The mode represents the cooperative grain boundary (GB) sliding and stress-driven GB migration process. It is theoretically revealed that the new deformation mode is more energetically favorable than pure GB sliding and enhances the ductility of nanocrystalline solids in wide ranges of their structural parameters.
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