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Microscopy and microindentation mechanics of single crystal Fe−3 wt. % Si: Part I. Atomic force microscopy of a small indentation

Published online by Cambridge University Press:  31 January 2011

S. Harvey ,
H. Huang ,
S. Venkataraman  and
W.W. Gerberich
S. Harvey
Affiliation:
Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455-0132
H. Huang
Affiliation:
Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455-0132
S. Venkataraman
Affiliation:
Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455-0132
W.W. Gerberich
Affiliation:
Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, Minnesota 55455-0132
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Abstract

Atomic force microscope measurements of elastic-plastic indentation into an Fe−3 wt. % Si single crystal showed that the volume displaced to the surface is nearly equal to the volume of the cavity. The surface displacement profiles and plastic zone size caused by a 69 nm penetration of a Vickers diamond tip are reasonably represented by an elastic-plastic continuum model. Invoking conservation of volume, estimates of the number of dislocations emanating from the free surface are reasonably consistent with the number of dislocations that have formed in the plastic zone to represent an average calculated plastic strain of 0.044.

Type
Articles
Information
Journal of Materials Research , Volume 8 , Issue 6 , June 1993 , pp. 1291 - 1299
Copyright
Copyright © Materials Research Society 1993

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References

REFERENCES

1Heinzelman, H., Meyers, E., Scandella, L., Griither, P., Jung, Th., Huer, H., Hidber, H-R., and Giintherodt, H-J., Wear 135, 109 (1989).CrossRefGoogle Scholar
2Burnham, N. and Cotton, R., J. Vac. Sci. Technol. A 9, 2548 (1991).CrossRefGoogle Scholar
3Wu, T. W., J. Mater. Res. 6, 407 (1991).CrossRefGoogle Scholar
4Oliver, W.C. and Pharr, G.M., J. Mater. Res. 7, 1564 (1992).CrossRefGoogle Scholar
5Venkataraman, S., Kohlstedt, D. L., and Gerberich, W. W., J. Mater. Res. 7, 1126 (1992).CrossRefGoogle Scholar
6Page, T. F., Oliver, W. C., and McHargue, C. J., J. Mater. Res. 7, 450 (1992).CrossRefGoogle Scholar
7Pharr, G. M. and Oliver, W. C., Mater. Res. Bull. XVII, 28 (1992).CrossRefGoogle Scholar
8Venkataraman, S., Kohlstedt, D. L., and Gerberich, W. W., in Thin Films: Stresses and Mechanical Properties III, edited by Nix, W. D., Bravman, J. C., Arzt, E., and Freund, L. B. (Mater. Res. Soc. Symp. Proc. 239, Pittsburgh, PA, 1992), p. 591.Google Scholar
9Johnson, K. L., Contact Mechanics (Cambridge University Press, Cambridge, 1985).CrossRefGoogle Scholar
10Johnson, K.L., J. Mech. Phys. Solids 18, 155 (1970).CrossRefGoogle Scholar
11Fleck, N.A., Otoyo, H., and Needleman, A., Int. J. Solids Structures 29, 1613 (1992).CrossRefGoogle Scholar
12Doerner, M.F. and Nix, W.D., J. Mater. Res. 1, 601 (1986).CrossRefGoogle Scholar
13Venkataraman, S., Huang, H., Zielinski, W., and Gerberich, W. W. (unpublished research).Google Scholar
14Pethica, J.B. and Tabor, D., Surf. Sci. 89, 182 (1979).CrossRefGoogle Scholar
15Gerberich, W.W., Wright, A.G., Kurman, E., and Peterson, K.A., Fracture: Measurement of Localized Deformation by Novel Techniques, edited by Gerberich, W. W. and Davidson, D. L. (TMSAIME, Warrendale, PA, 1984), p. 59.Google Scholar
16Hill, R., The Mathematical Theory of Plasticity (Oxford University Press, Oxford, 1950).Google Scholar
17Lockett, F.J., J. Mech. Phys. Solids 11, 345 (1963).CrossRefGoogle Scholar