Chapter 84. High-Strain-Rate Behavior of Microstructurally-Biased Two-Phase TIB2+Al2O3 Ceramics

  1. Todd Jessen and
  2. Ersan Ustundag
  1. Greg Kennedy,
  2. Jun Zhai,
  3. Rod Russell,
  4. Min Zhou and
  5. Naresh Thadhani

Published Online: 26 MAR 2008

DOI: 10.1002/9780470294628.ch84

24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 21, Issue 3

24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 21, Issue 3

How to Cite

Kennedy, G., Zhai, J., Russell, R., Zhou, M. and Thadhani, N. (2000) High-Strain-Rate Behavior of Microstructurally-Biased Two-Phase TIB2+Al2O3 Ceramics, in 24th Annual Conference on Composites, Advanced Ceramics, Materials, and Structures: A: Ceramic Engineering and Science Proceedings, Volume 21, Issue 3 (eds T. Jessen and E. Ustundag), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470294628.ch84

Author Information

  1. Georgia Institute of Technology, Atlanta, GA 30332-0245

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2000

ISBN Information

Print ISBN: 9780470375686

Online ISBN: 9780470294628

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Keywords:

  • silicon nitride materials;
  • high-temperature behavior;
  • microcomposites;
  • grain boundary;
  • elevated temperatures

Summary

The high-strain-rate behavior of two-phase TiB2+Al2O3 ceramics with biased microstructures is investigated. Quantitative microscopy was performed to characterize the microstructural bias on the basis of phase size and integral curvature (used as a measure of TiB2 phase connectivity around Al2O3). Dynamic compression and tension (spall) properties were measured, using plate-impact experiments. The measurements used VISAR interferometry and piezoelectric PVDF stress gauges. Finite element simulations of fracture were carried to describe the actual phase morphologies and arbitrary fracture patterns in the microstructures. The results of the quantitative microstructural characterization, high-strain-rate experiments and numerical simulations are discussed.