Journal of Materials Science

, Volume 29, Issue 4, pp 1075–1082 | Cite as

Thermal treatment effects in SiC/Al metal matrix composites

  • S. J. Swindlehurst
  • I. W. Hall


A short-fibre-reinforced SiC/Al-7% Si-0.6% Mg composite has been subjected to thermal cycling and elevated temperature isothermal exposure treatments. The microstructure and residual mechanical properties have been determined as a function of these treatments. It was found that isothermal or cycling treatment at 350 °C caused severe room-temperature strength degradation while treatment at 525 °C caused little change. Strength changes are attributed principally to precipitation and dissolution effects and to transfer of magnesium from the matrix into the fibre/matrix interfacial reaction layer. There was no evidence of mechanical damage resulting from the cycling treatments.


Microstructure Magnesium Thermal Treatment Thermal Cycling Matrix Composite 
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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • S. J. Swindlehurst
    • 1
  • I. W. Hall
    • 1
  1. 1.Materials Science ProgramUniversity of DelawareNewarkUSA

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