Chapter 28. Neutron Diffraction Studies of Residual Stress in Aluminnsilicon Carbide Nanocomposites

  1. John B. Wachtman Jr.
  1. C. Lamstaes1,
  2. M. Sternitzke1,
  3. L. Carroll1,
  4. B. Derby1 and
  5. R. Ibberson2

Published Online: 26 MAR 2008

DOI: 10.1002/9780470314821.ch28

Proceedings of the 20th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - A: Ceramic Engineering and Science Proceedings, Volume 17, Issue 3

Proceedings of the 20th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - A: Ceramic Engineering and Science Proceedings, Volume 17, Issue 3

How to Cite

Lamstaes, C., Sternitzke, M., Carroll, L., Derby, B. and Ibberson, R. (2008) Neutron Diffraction Studies of Residual Stress in Aluminnsilicon Carbide Nanocomposites, in Proceedings of the 20th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures - A: Ceramic Engineering and Science Proceedings, Volume 17, Issue 3 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470314821.ch28

Author Information

  1. 1

    Department of Materials, University of Oxford, Parks Road, Oxford, OX1 3PH, UK

  2. 2

    Neutron Division, Rutherford Appleton Laboratory, Chilton, Oxford, OX11 OQX, UK

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 1996

ISBN Information

Print ISBN: 9780470375426

Online ISBN: 9780470314821

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Keywords:

  • matrix stresses;
  • reinforcements;
  • nanocomposites;
  • dislocation;
  • fabrication

Summary

We have studied the residual stress developed in a number of Al2O3/SiC nanocomposites fabricated with a range of different SiC mean particle sizes from 12 to 115nm. These materials were found to have mean matrix stresses in the range 150–200MPa tension and reinforcement stresses of 1.6–1.75GPa in compression. There was no significant dependence of the measured residual stress level on particle size in the range 55–115nm. However, a much larger residual stress was found in the smallest SiC reinforcements. This value may be an artefact of the polymer precursor processing route necessary to fabricate nanocomposites with such a small SiC particle size.