Metallurgical Transactions A

, Volume 16, Issue 6, pp 1105–1115 | Cite as

Analysis of stress-strain, fracture, and ductility behavior of aluminum matrix composites containing discontinuous silicon carbide reinforcement

  • David L. McDanels
Mechanical Behavior


Mechanical properties and stress-strain behavior were evaluated for several types of commercially fabricated aluminum matrix composites, containing up to 40 vol pct discontinuous SiC whisker, nodule, or particulate reinforcement. The elastic modulus of the composites was found to be isotropic to be independent of type of reinforcement, and to be controlled solely by the volume percentage of SiC reinforcement present. The yield/tensile strengths and ductility were controlled primarily by the matrix alloy and temper condition. Type and orientation of reinforcement had some effect on the strengths of composites, but only for those in which the whisker reinforcement was highly oriented. Ductility decreased with increasing reinforcement content; however, the fracture strains observed were higher than those reported in the literature for this type of composite. This increase in fracture strain was probably attributable to cleaner matrix powder, better mixing, and increased mechanical working during fabrication. Comparison of properties with conventional aluminum and titanium structural alloys showed that the properties of these low-cost, lightweight composites demonstrated very good potential for application to aerospace structures.


Metallurgical Transaction Ultimate Tensile Strength Matrix Alloy Failure Strain Reinforcement Content 
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  1. 1.
    D. L. McDanels and R. A. Signorelli: NASA TM-3357, Lewis Research Center, Cleveland, OH, March 1983.Google Scholar
  2. 2.
    D. L. McDanels and C. A. Hoffman: NASA TP2032, Lewis Research Center, Cleveland, OH, July 1984.Google Scholar
  3. 3.
    B. C. Bechtold, R. L. Beatty, and J. L. Cook:Progress in Science and Engineering of Composites, Japan Society for Composite Materials, Tokyo, 1982, vol. 1, pp. 113–20.Google Scholar
  4. 4.
    W. C. Harrigan, Jr., A. M. Nowitzky, and E. C. Supan: NAVSEA Phase I Final Report, Contract N00024-80-C-5637, Washington, DC, Feb. 1982.Google Scholar
  5. 5.
    H. J. Rack, J. L. Cook, and T. R. Baruch:Progress in Science and Engineering of Composites, Japan Society for Composite Materials, Tokyo, 1982, vol. 2, pp. 1465–72.Google Scholar
  6. 6.
    Metals Handbook, 8th ed.., T. Lyman, ed., ASM, Metals Park, OH, 1961, vol. 1.Google Scholar
  7. 7.
    A. P. Divecha, S. G. Fishman, and S. D. Karmarkar:J. Met., 1981, vol. 33, no. 9, pp. 12–17.Google Scholar
  8. 8.
    T. G. Nieh and R. F. Karlak:J. Mater. Sci. Lett., 1983, vol. 2, pp. 119–22.CrossRefGoogle Scholar
  9. 9.
    W. L. Phillips:ICCM/2: Proceedings of the 1978 International Conference on Composite Materials, Metallurgical Society of the AIME, Warrendale, PA, 1978, pp. 567–76.Google Scholar
  10. 10.
    Avia. Week Space Technol., 1983, vol. 118, no. 23, pp. 29–32.Google Scholar
  11. 11.
    T. H. Sanders, Jr., NADC-76397-30, Naval Air Development Center, Warminster, PA, June 1976.Google Scholar
  12. 12.
    E. A. Starke, Jr., T. H. Sanders, Jr., and I. G. Palmer,J. Met., 1981, vol. 33, no. 8, pp. 24–33.Google Scholar

Copyright information

© The Metallurgical of Society of AIME 1985

Authors and Affiliations

  • David L. McDanels
    • 1
  1. 1.NASA Lewis Research CenterCleveland

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