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A Simulation Study of Tracer Diffusion Concentration Profiles Resulting from the Transition from Dislocation Pipes to a Grain Boundary Slab

Published online by Cambridge University Press:  21 March 2011

Irina V Belova  and
Graeme E Murch
Irina V Belova
Affiliation:
Diffusion in Solids Group, Dept. Mechanical Engineering The University of Newcastle, Callaghan, NSW 2308, AUSTRALIA
Graeme E Murch
Affiliation:
Diffusion in Solids Group, Dept. Mechanical Engineering The University of Newcastle, Callaghan, NSW 2308, AUSTRALIA
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Abstract

In the present study we examine the well-known analysis in which the dislocation pipe diffusivity is determined by means of a grain boundary type analysis of the tail of a tracer concentration depth profile. We use a Monte Carlo grid method for testing the analysis. The results show that the analysis is really only satisfactory when the spacing between the dislocations is roughly twice the diffusion length (Dlt)½ where Dland t are the lattice diffusivity and time respectively.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 677: Symposium AA – Advances in Materials Theory and Modeling–Bridging Over Multiple-Length and Time Scales , 2001 , AA7.7
Copyright
Copyright © Materials Research Society 2001

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References

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