An evaluation is made of the consequences for fracture behavior of the fiber-matrix reaction zone in copper or tungsten fiber-reinforced aluminum matrix composites. Attention is given to the initiation and propagation of microcracks with casting temperature, for the cases of 700, 800, and 900 C in the aluminum-tungsten system, which yielded higher strength than that predicted by the law of mixtures. The strength of the aluminum-copper system composites is noted ...
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