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Distribution of Grain Boundary Planes at Coincident Site Lattice Misorientations

Published online by Cambridge University Press:  15 March 2011

Gregory S. Rohrer ,
Bassem S. El-Dasher ,
Herbert M. Miller ,
Anthony D. Rollett  and
David M. Saylor
Gregory S. Rohrer
Affiliation:
Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, PA 15213-3890, U.S.A.
Bassem S. El-Dasher
Affiliation:
University of California, Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, CA 94511, U.S.A.
Herbert M. Miller
Affiliation:
Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, PA 15213-3890, U.S.A.
Anthony D. Rollett
Affiliation:
Department of Materials Science and Engineering, Carnegie Mellon University, Pittsburgh, PA 15213-3890, U.S.A.
David M. Saylor
Affiliation:
U.S.F.D.A., 12725 Twinbrook Parkway, Rockville, MD 20852, U.S.A.
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Abstract

The grain boundary plane distributions in MgO, SrTiO3, MgAl2O4, and Al are compared at lattice misorientations with a coincident site density of greater than or equal to 1/9. In most situations, the most frequently adopted grain boundary orientation is a habit plane of low index and low surface energy that depends on the particular material. Cases where the most common boundary orientation is a plane of high planar coincident site density instead of a characteristic habit plane are rare. In fact, in most cases, the distributions of grain boundary planes at misorientations with high lattice coincidence are not substantially different from the distributions at other, more general misorientations. The results indicate that a model for grain boundary energy and structure based on grain surface relationships is more appropriate than the widely accepted models based on lattice orientation relationships.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 819: Symposia N/P – Interfacial Engineering for Optimized Properties III , 2004 , N7.2
Copyright
Copyright © Materials Research Society 2004

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