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Modeling of the Dislocation Formation at Pores and Inclusions under Thermo-Mechanical Shear Loads

Published online by Cambridge University Press:  15 February 2011

R. Rentsch  and
V. Vitek
R. Rentsch
Affiliation:
Laboratory for Precision Machining (LFM), Bremen University, Bremen, Germany, and Max-Planck-Institute for Metal Research, Stuttgart, Germany
V. Vitek
Affiliation:
Department of Material Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
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Abstract

Materials used in many technical applications contain a broad variety of defects. In both metals and ceramics, pores and inclusions influence significantly the elastic and plastic response. They can limit or broaden the range of applicability of the materials for high performance components and play, therefore, a very significant role in engineering applications.

This study focuses on the onset of dislocation formation and its intensity at pores and hard inclusions during the deformation process. For this purpose a molecular dynamics model of an fcc metal containing pores and/or inclusions was developed. This model material was then sheared at different strains and related development of the dislocation substructures investigated.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 578: Symposia A/C – Multiscale Phenomena in Materials - Experiments in Modeling , 1999 , 273
Copyright
Copyright © Materials Research Society 2000

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References

REFERENCES

1. Davidge, R.W., Mechanical Behavior of Ceramics, Alden Press, Oxford, GB, 1979, pp.11–30.Google Scholar
2. Finnes, M. W., Atomic Energy Authority Harwell Report No. AERE-R-13182, 1988.Google Scholar
3. Parrinello, M., Rahman, A., Polymorphic transition in single crystals: A new molecular dynamics method, J.Appl.Phys. 52(12), Dec. 1981, p. 7182–7190.Google Scholar
4. Ackland, G. J., Tichy, G., Vitek, V., Finnis, M. W., Simple N-body Potentials for the Noble Metals and Nickel, Phil.Mag., A., Vol. 56, No 6, pages 735–756, 1987.Google Scholar