Hostname: page-component-78c5997874-m6dg7 Total loading time: 0 Render date: 2024-11-08T00:13:09.307Z Has data issue: false hasContentIssue false

Quantitative High Resolution Electron Microscopy of Grain Boundaries and Comparison with Atomistic Simulations

Published online by Cambridge University Press:  02 July 2020

G.H. Campbell
Affiliation:
Chemistry and Materials Science, University of California, Lawrence Livermore National Laboratory, Livermore, CA, 94550
W.E. King
Affiliation:
Chemistry and Materials Science, University of California, Lawrence Livermore National Laboratory, Livermore, CA, 94550
J.M. Plitzko
Affiliation:
Chemistry and Materials Science, University of California, Lawrence Livermore National Laboratory, Livermore, CA, 94550
J. Belak
Affiliation:
Physics and Advanced Technologies Directorates, University of California, Lawrence Livermore National Laboratory, Livermore, CA, 94550
S.M. Foiles
Affiliation:
Sandia National Laboratories, Albuquerque, NM, 87185-1411
Get access

Abstract

The technique of high-resolution transmission electron microscopy (HREM) produces images that contain information about the atomic structure of the specimen. Within additional, very stringent, constraints, the HREM image can contain information about atomic structure of crystal defects, including grain boundaries and interfaces. to extract this information from the image it is necessary to compare the experimental image with a simulated image calculated based upon an atomic model of the specimen.2 in this comparison, investigators have been aided by the use of quantitative techniques.

Atomistic simulations are often used to predict the atomic structure of crystal defects or to simulate the evolution of dynamic processes in crystals, e.g. radiation effects or dislocation motion and interaction. During the development of new models of interatomic interactions, the predictions of simulations are tested against experimental observations to validate new potentials. Grain boundary structure is a good test because atoms residing in the boundary experience environments (interatomic distances and angles) that are significantly different from those experienced by atoms residing in a perfect crystal lattice site.

Type
Quantitative Transmission Electron Microscopy of Interfaces (Organized by M. Rüehle, Y. Zhu and U. Dahmen)
Copyright
Copyright © Microscopy Society of America 2001

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1.Pirouz, P. and Ernst, F., in Rühle, M., Evans, A.G., Hirth, J.P. and Ashby, M.F., Ed., Metal - Ceramic Interfaces, Pergamon Press (1990)199.CrossRefGoogle Scholar
2.Stadelmann, PA., Ultramicroscopy 21(1987)131.CrossRefGoogle Scholar
3.King, W.E., Campbell, G.H., Foiles, S.M., Cohen, D. and Hanson, K.M., J. Microsc. - Oxford 190(1998)131.CrossRefGoogle Scholar
4.Möbus, G., Ultramicroscopy 65(1996)205.CrossRefGoogle Scholar
5.Nadarzinski, K. and Ernst, F., Philos. Mag. A 74(1996)641.CrossRefGoogle Scholar
6.Moriarty, J.A., Phys. Rev. B 42(1990)1609.CrossRefGoogle Scholar
7.Campbell, G.H., Foiles, S.M., Gumbsch, P., Rühle, M. and King, W.E., Phys. Rev. Lett. 70(1993)449.CrossRefGoogle Scholar
8.Campbell, G.H., Belak, J. and Moriarty, J.A., Acta Mater. 47(1999)3977.CrossRefGoogle Scholar
9.Campbell, G.H., Belak, J. and Moriarty, J.A., Scripta Mater. 43(2000)659.CrossRefGoogle Scholar
10.Plitzko, J.M., Campbell, G.H., King, W.E. and Foiles, S.M., in Bentley, J., Dahmen, U., Allen, C. and Petrov, I., Ed., Advances in Materials Problem Solving with the Electron Microscope, Materials Research Society (2000).Google Scholar
11.This work performed under the auspices of the Office of Basic Energy Sciences, U.S. Department of Energy, and the Lawrence Livermore National Laboratory under contract No. W-7405-Eng-48 and Sandia National Laboratories under contract No. DE-AC04-94AL85000.Google Scholar