Dislocation nucleation and defect structure during surface indentation
Journal Article
·
· Physical Review, B: Condensed Matter
- Sandia National Laboratories, Livermore, California 94551-0969 (United States)
- Sandia National Laboratories, Albuquerque, New Mexico 87185 (United States)
We model indentation of a metal surface by combining an atomistic metal with a hard-sphere indenter. This work provides atomistic imaging of dislocation nucleation during displacement controlled indentation on a passivated surface. Dislocations and defects are located and imaged by local deviations from centrosymmetry. For a Au(111) surface, nucleation of partial dislocation loops occurs below the surface inside the indenter contact area. We compare and contrast these observations with empirical criteria for dislocation nucleation and corresponding continuum elasticity solutions. {copyright} {ital 1998} {ital The American Physical Society}
- OSTI ID:
- 663722
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 17 Vol. 58; ISSN 0163-1829; ISSN PRBMDO
- Country of Publication:
- United States
- Language:
- English
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