Chapter 44. High-Temperature Tension-Tension Cyclic Fatigue for an HIP'ed Silicon Nitride

  1. John B. Wachtman Jr
  1. Leon Chuck,
  2. Dale E. McCullum,
  3. Norman L. Hecht and
  4. Steven M. Goodrich

Published Online: 28 MAR 2008

DOI: 10.1002/9780470313831.ch44

Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 7/8

Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 7/8

How to Cite

Chuck, L., McCullum, D. E., Hecht, N. L. and Goodrich, S. M. (1991) High-Temperature Tension-Tension Cyclic Fatigue for an HIP'ed Silicon Nitride, in Proceedings of the 15th Annual Conference on Composites and Advanced Ceramic Materials, Part 1 of 2: Ceramic Engineering and Science Proceedings, Volume 12, Issue 7/8 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470313831.ch44

Author Information

  1. University of Dayton Research Institute Dayton, OH 45469–0172

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1991

ISBN Information

Print ISBN: 9780470375099

Online ISBN: 9780470313831

SEARCH

Keywords:

  • microstructural;
  • mechanism;
  • cyclic;
  • nitride;
  • diameter

Summary

Interrupted cyclic fatigue (ICF) was used to evaluate Norton/TRW NT-154 silicon nitride at 1300°C in air. The maximum applied stress in tension-tension cyclic fatigue ranged from 200 to 400 MPa and the minimum-to-maximum applied stress ratio, R, was +0.1. Volume defects (cavities and inclusions) were found to be the primary source of failures. Tension-tension cyclic fatigue specimens were fast fractured if they survived 450 000 cycles (100 h) to evaluate instantaneous microstructural changes. Strength-limiting defects and ICF residual strength results indicated that strength degradation by cavitation is the dominant failure mechanism.