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T700/Al and M40/Al composites were fabricated by squeeze casting technology, and their interface and mechanical properties were investi-gated comparatively. The results showed that both of the composites were dense, and the fibers were distributed uniformly in aluminum ma-trix. Aluminum carbide (Al4C3) was observed on the interface of the two carbon fiber-reinforced aluminum (Cf/Al) composites. There was little Al4C3 with a length of 300-500 nm and a width of 30-60 nm in the M40/Al composite, whereas there was a great deal of Al4C3 with a length of 200-400 nm and a width of 100-200 nm in the T700/Al composite, due to a higher graphitization of M40Cf than T700Cf. The M40/Al composite showed a much higher tensile strength than the T700/Al composite, and it was related to interfacial bonding between carbon fibers and aluminum matrices.
T700 / Al and M40 / Al composites were fabricated by squeeze casting technology, and their interface and mechanical properties were investi-gated comparatively. The results showed that both of the composites were dense, and the fibers were distributed uniformly in aluminum ma-trix. There was little Al4C3 with a length of 300-500 nm and a width of 30-60 nm in the M40 / Al (Al4C3) was observed on the interface of the two carbon fiber- reinforced aluminum (Cf / Al) composites. composite, there was a great deal of Al4C3 with a length of 200-400 nm and a width of 100-200 nm in the T700 / Al composite, due to a higher graphitization of M40Cf than T700Cf. The M40 / Al composite showed a much higher tensile strength than the T700 / Al composite, and it was related to interfacial bonding between carbon fibers and aluminum matrices.