Chapter 58. Compressive Failure Mechanisms of a Novel Low Density Composite

  1. John B. Wachtman Jr.
  1. S. A. Rickles,
  2. J. K. Cochran and
  3. T. H. Sanders Jr.

Published Online: 28 MAR 2008

DOI: 10.1002/9780470310588.ch58

A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 9/10

A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 9/10

How to Cite

Rickles, S. A., Cochran, J. K. and Sanders, T. H. (1989) Compressive Failure Mechanisms of a Novel Low Density Composite, in A Collection of Papers Presented at the 13th Annual Conference on Composites and Advanced Ceramic Materials, Part 2 of 2: Ceramic Engineering and Science Proceedings, Volume 10, Issue 9/10 (ed J. B. Wachtman), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470310588.ch58

Author Information

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

Publication History

  1. Published Online: 28 MAR 2008
  2. Published Print: 1 JAN 1989

ISBN Information

Print ISBN: 9780470374870

Online ISBN: 9780470310588

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Keywords:

  • liquid metal infiltration process;
  • metall/aerosphere composite;
  • volume fraction;
  • metal matrix composites;
  • chopped fibers

Summary

A liquid metal infiltration process has been developed to fabricate a low density, porous metal matrix composite (PMMC). The composite consists of an aluminum alloy matrix containing uniform, hollow, thin-shell spheres, termed aerospheres, composed of alumina. The PMMC is lightweight, inexpensive to fabricate, and has potential application when weight savings is of paramount importance. The densities of an Al-Al2O3 composite range from 1.3-1.8 gms/cc and can be controlled by the physical properties of the aerosphere and/or the volume fraction of spheres in the composite. The emphasis of this presentation will be on the compressive failure mechanism of the low density PMMC utilizing the additive properties of the aerosphere and aluminum phase.