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Dynamical Simulation of the Motion of Curved Grain Boundaries Composed of Pyramidal-Shaped Ledges

Published online by Cambridge University Press:  16 February 2011

Re-Jhen Jhan  and
P. D. Bristowe
Re-Jhen Jhan
Affiliation:
Department of Materials Science and Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
P. D. Bristowe
Affiliation:
Department of Materials Science and Engineering Massachusetts Institute of Technology Cambridge, MA 02139, USA
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Abstract

A dynamical simulation of curved grain boundaries composed of pyramidal-shaped ledges has shown that the boundaries can move by local conservative shuffles of atoms or groups of atoms such that one adjoining crystal grows at the expense of the other. In the model system studied, the shuffles often take the form of correlated rotational displacements about the axis normal to the boundary. The simulations provide support for the atomic mechanism proposed by Babcock and Balluffi to explain their observation of grain boundary migration without the participation of SGBDs.

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Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 193: Symposium Q – Atomic Scale Calculations of Structure in Materials , 1990 , 189
Copyright
Copyright © Materials Research Society 1990

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References

REFERENCES

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