Elastic Moduli of Silicon Carbide Particulate Reinforced Aluminum Metal Matrix Composites

  • H. Jeong
  • D. K. Hsu
  • R. E. Shannon
  • P. K. Liaw
Part of the Review of Progress in Quantitative Nondestructive Evaluation book series


The mechanical properties of metal matrix composites (MMCs) reinforced by discontinuous silicon carbides are governed by the properties of the reinforcing phase, as well as their morphology (whisker vs. particulate), orientation and volume fraction. The morphology of SiC particles and their orientation are major variables affecting the anisotropic properties of these composites. SiC whisker (SiCW) reinforced aluminum MMCs tend to have higher strengths and moduli in the extrusion direction due to the high degree of whisker alignment in that direction, and these values are higher than those for SiC particulate (SiCp) reinforced composites at a given reinforcement level [1]. SiCp reinforced MMCs are known to be more isotropic in the extrusion plane. In situations requiring multidirectional reinforcement, particulate reinforced composites can outperform whisker reinforced composites. Thus, it is important to characterize the mechanical properties of these composites in order to develop the criteria for selecting microstructural design variables.


Metal Matrix Composite Oblique Incidence Extrusion Direction Refract Wave Quantitative Nondestructive Evaluation 
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Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • H. Jeong
    • 1
  • D. K. Hsu
    • 1
  • R. E. Shannon
    • 2
  • P. K. Liaw
    • 2
  1. 1.Center for NDEIowa State UniversityAmesUSA
  2. 2.Metals Technologies DepartmentWestinghouse Science and Technology CenterPittsburghUSA

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