Table of Contents
Textures and Microstructures
Volume 24, Issue 1-3, Pages 67-73
http://dx.doi.org/10.1155/TSM.24.67

Axisymmetric Textures in Alumina

1Purdue University, School of Materials Engineering, W. Lafayette, IN, USA
2Risø National Laboratory, Roskilde, Denmark

Received 20 August 1994; Accepted 18 October 1994

Copyright © 1995 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The occurrence of axisymmetric textures prevails over a wide range of processing approaches for alumina-based materials. Mechanisms ranging from dislocation slip, recrystallization, anisometric grain rotation and grain growth all can contribute to the development of textures with similar characteristics. This paper documents neutron texture measurements of axisymmetric textures in hot-pressed, hot-forged and tape-cast alumina. Strong basal textures were introduced in the tape-cast samples during long term annealing in finer, non-tabular aluminas if glass and dopant additions are introduced. The implications of these results versus prior reports of textures in alumina and alumina matrix composites are discussed.