Journal
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume 88, Issue 3, Pages 666-674Publisher
BLACKWELL PUBLISHING INC
DOI: 10.1111/j.1551-2916.2005.00115.x
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The effective Young's moduli of co-continuous Al-Al2O3 composites over the 5-97 vol% Al2O3 composition range were experimentally measured and compared with theoretical composite modulus values predicted using the methods of Ravichandran, Tuchinskii, Hashin-Shtrikman, and the effective medium approximation (EMA). The influence of phase morphology and the modulus ratio (E-1/E-2) of the constituent phases on the resulting experimental and calculated Young's modulus is discussed. For two-phased co-continuous composites with a modulus ratio greater than 5, the EMA, with an appropriate microstructural shape factor, was the most consistent method for approximating the composite Young's modulus over the entire composition range.
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