Grain Boundary Structure in Hexagonal Materials

Sarrazit, F., MacLaren, I. , Aindow, M. and Pond, R.C. (1998) Grain Boundary Structure in Hexagonal Materials. In: David A Smith Memorial Symposium on Boundaries and Interfaces in Materials at the 1997 TMS Fall Meeting, Indianapolis, IN, USA, 15-18 Sep 1997, pp. 29-38. ISBN 9780873394048

Abstract

The structure of grain boundaries in hexagonal materials has been studied using transmission electron microscopy. On the basis of these observations, boundaries are classified as low-angle, special or general. Low-angle boundaries are composed of crystal dislocation networks, similar to observations in materials exhibiting other crystal symmetries. Special boundaries contained interfacial dislocation networks accommodating deviations from singular reference structures. Evidence that reference structures are based on 3-D, 2-D and 1-D periodic configurations has been obtained, but further work is required on this topic. An observation of a transition between two structural forms which are characteristic of 3-D and 1-D reference structures is also presented. In the 1-D case, the interfacial structure is incommensurate in one direction, and hence resembles a general boundary in some respects.

• Item Type: Conference Proceedings
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: MacLaren, Dr Ian
• Authors: Sarrazit, F., MacLaren, I., Aindow, M., and Pond, R.C.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• ISBN: 9780873394048