Abstract

Aluminum based metal matrix composite reinforced with SiC particles was fabricated by the powder-in sheath rolling method. A stainless steel tube with outer diameter of 12 mm and wall thickness of 1mm was used as a sheath. Mixture of aluminum powder and SiC particles of which volume content was varied from 5 to 20vol.% was filled in the tube by tap filling and then rolled to 75% reduction at ambient temperature. The rolled specimen was sintered at 560°C for 0.5hr. The tensile strength of the (SiC)_p/Al composite increased with the volume content of SiC particles, and at 20vol.% it reached a maximum of 100㎫ which is 1.6 times higher than unreinforced material. The elongation decreased with the volume content of Al_2O_3 particles. The mechanical properties of the (SiC)_p/Al composite fabricated by the powder-in sheath rolling is compared with that of (Al_2O_3)_p/Al composite by the same process.ess.

• Keywords: Powder-in sheath rolling(SiC)_p/Al composite;Mechanical properties;Microstructure;