Abstract
In the paper the yield strength of Al-Al₄C₃ composite system with high volume fraction of Al₄C₃ phase is evaluated. The results are compared with the previously obtained ones for lower volume fraction of dispersion phase.
Additive contributions to yield strength of the material with a high volume fraction of secondary phase (12 vol.% Al-Al₄C₃) are in agreement with the linear law for materials with lower fraction of dispersoids (1-10 vol.% Al₄C₃). The validity of the Fischer-Hart-Pry relation between yield strength and microstructural parameters for Al-Al₄C₃ system with particle arrangement in rows is confirmed in the paper.

Key words
additive components of yield strength, structural parameters, Al-Al₄C₃ composite

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