Chapter 29. Residual Microstrains in Whisker-Reinforced Alumina
- John B. Wachtman Jr.
Published Online: 28 MAR 2008
Copyright © 1988 The American Ceramic Society, Inc.
Proceedings of the 12th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 9, Issue 7/8
How to Cite
Bar-Ziv, S. and Brandon, D. G. (1988) Residual Microstrains in Whisker-Reinforced Alumina, in Proceedings of the 12th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 9, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470310496.ch29
- Published Online: 28 MAR 2008
- Published Print: 1 JAN 1988
Print ISBN: 9780470374801
Online ISBN: 9780470310496
- thermal expansion
The magnitude of the internal stresses in whisker-reinforced ceramic matrix composites can be estimated from X-ray diffraction peak shift measurements. In alumina matrix composites these stresses have been modeled by assuming that both the matrix and the reinforcing phase are continuous. Lattice strains were measured by two distinct procedures. In the first, accurate values for the volume of the unit cell were calculated; in the second. the strains were measured for specific lattice directions. The data are primarily from the α-Al2O3 matrix phase, but some results are also available from the β-SiC whisker reinforcement. The dominant stresses are no deviatory and were found to depend strongly on the composition and heat treatment schedule of the composite.