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Quantitative Hrem Study of the Atomic Structure of the Σ(310)/[001] Symmetric Tilt Grain Boundary in Nb

Published online by Cambridge University Press:  15 February 2011

Wayne E. King  and
Geoffrey H. Campbell
Wayne E. King
Affiliation:
Chemistry and Materials Science Department, University of California, Lawrence Livermore National Laboratory, Livermore, CA 94550
Geoffrey H. Campbell
Affiliation:
Chemistry and Materials Science Department, University of California, Lawrence Livermore National Laboratory, Livermore, CA 94550
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Abstract

We have used a non-linear least squares optimization method to deduce a model for the atomic structure of the Σ(310)/[001] symmetric tilt grain boundary in Nb from high resolution electron micrographs (HREM) of a bicrystal prepared by diffusion bonding. The resultant model is similar to, but differs in detail from a theoretical prediction based on interatomic potentials which included angular forces thought to be important in the prediction of defect structures in body centered cubic metals. Results validate this approach as a step towards making HREM a quantitative technique.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 295: Symposium W – Atomic-Scale Imaging of Surfaces and Interfaces , 1992 , 83
Copyright
Copyright © Materials Research Society 1993

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References

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