The discrete dislocation model is used in this note to investigate the source-limited dislocation generation and glide in nanoindentation. It is shown that once there are enough sources for dislocation generation, the material behavior becomes independent of the dislocation source distribution.
Issue Section:
Brief Notes
1.
Nix
, W. D.
, 1997
, “Elastic and Plastic Properties of Thin Films on Substrates: Nanoindentation Techniques
,” Mater. Sci. Eng., A
, 234
, pp. 37
–44
.2.
Gouldstone
, A.
, Koh
, H.-J.
, Zeng
, K.-Y.
, Giannakopoulos
, A. E.
, and Suresh
, S.
, 2000
, “Discrete and Continuous Deformation During Nanoindentation of Thin Films
,” Acta Mater.
, 48
, pp. 2277
–2295
.3.
Zielinski
, W.
, Huang
, H.
, Venkataraman
, S.
, and Gerberich
, W. W.
, 1995
, “Dislocation Distribution Under a Microindentation Into an Iron-Silicon Single Crystal
,” Philos. Mag. A
, 72
, pp. 1221
–1237
.4.
Gerberich
, W. W.
, Nelson
, J. C.
, Lilleodden
, E. T.
, Anderson
, P.
, and Wyrobek
, J. T.
, 1996
, “Indentation Induced Dislocation Nucleation: The Initial Yield Point
,” Acta Mater.
, 44
, pp. 3585
–3598
.5.
Tadmor
, E. B.
, Miller
, R.
, and Phillips
, R.
, 1999
, “Nanoindentation and Incipient Plasticity
,” J. Mater. Res.
, 14
, pp. 2233
–2250
.6.
Shi, M., Huang, Y., and Gao, H., 2003, “The J-Integral and Geometrically Necessary Dislocations in Nonuniform Plastic Deformation,” Int. J. Plasticity, in press.
7.
Needleman
, A.
, and van der Giessen
, E.
, 2001
, “Discrete Dislocation and Continuum Descriptions of Plastic Flow
,” Mater. Sci. Eng., A
, 309
, pp. 1
–13
.8.
van der Giessen
, E.
, Deshpande
, V. S.
, Cleveringa
, H. H. M.
, and Needleman
, A.
, 2001
, “Discrete Dislocation Plasticity and Crack Tip Fields in Single Crystals
,” J. Mech. Phys. Solids
, 49
, pp. 2133
–2153
.9.
Hills, D. A., and Nowell, D., 1994, Mechanics of Fretting Fatigure, Kluwer Academic Publishers, Boston.
Copyright © 2004
by ASME
You do not currently have access to this content.