マトリックスに埋め込まれた状態での繊維強度を考慮したSiC/Al合金複合材の引張強度

概要

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In the present study, three kinds of composite wires of continuous SiC (Nicalon)-fiber-reinforced Al alloys, pure-Al, Al-5.7 %Ni and Al-4.0 %Cu, were employed for tensile tests. The strength of the matrix was changed by heat treatment to check the relationship between the tensile strength and the matrix strength. The strength of composite wires was calculated by the conventional rule of mixture. The results showed that the effect of matrix strength on the composite strength could not be predicted as it was. The rule of mixture was modified to relate reasonably well with matrix strength by determining the critical fiber length. The calculated strength of composite wire based on the devised rule of mixture was in good agreement with experimental results. It has been demonstrated that the matrix strength makes the fiber increase in strength by decreasing the critical fiber length.
一般社団法人日本機械学会の論文
1991-12-25