高圧凝固鋳造による SiC 繊維強化金属の複合組織

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The present paper deals with microstructures and segregations of silicon-carbide fiber reinforced copper-added aluminium and aluminium-added magnesium alloy composites, fabricated by squeeze casting, as well as refers to the effect of the microstructure on the tensile strength of composites. The results obtained as follows; (1) Microscopic examination showed the solute element rich layer of a semicircle surroundings was locally formed on fibers in the composites, whichever matrix alloy was used. The layer was identified to be a eutectic constitution by EPMA analysis. With the decrease of the percentage of alloying element, the layer decreases in thickness and area fraction, and finally, for the case of 1% copper-aluminium matrix, no copper-rich layer was detected. (2) The appearance of the layer decreases the tensile strength of composites because of its brittleness.
一般社団法人日本機械学会の論文
1984-05-25