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Diffusion-Accommodated Grain Boundary Sliding in a Polycrystal

Published online by Cambridge University Press:  16 February 2011

P. M. Hazzledine  and
J. H. Schneibel
P. M. Hazzledine
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
J. H. Schneibel
Affiliation:
Metals and Ceramics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
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Abstract

A two-dimensional model for diffusional creep (Coble creep) and diffusionaccommodated grain boundary sliding in polycrystals has been developed. The results obtained for small symmetrical clusters of grains reproduce Spingam and Nix's work [Acta Metall. 2M, 1389 (1978)]. For clusters of irregularly shaped grains the material deposition and removal rates, the fluxes along the grain boundaries, the grain boundary tractions as well as the grain boundary sliding rates are irregular and can all be calculated.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 196: Symposium T – Superplasticity in Metals, Ceramics, and Intermetallics , 1990 , 15
Copyright
Copyright © Materials Research Society 1990

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References

REFERENCES

1. Spingarn, J. R. and Nix, W. D., Acta Metall. 26, 1389 (1978).Google Scholar
2. Coble, R. L., J. Appl. Phys. 34, 1679 (1963).Google Scholar
3. Schneibel, J. H., Coble, R. L. and Cannon, R. M., Acta. Metall. 22, 1285 (1981).Google Scholar
4. Schneibel, J. H. and Hazzledine, P. M., J. Mater. Res. 5, 563 (1990).Google Scholar