The mechanical properties and microstructure of Al composite bar manufactured by using stone mill crushed rapidly solidified Al/Al2O3–TiC

A stone-mill type crusher, newly designed device, was used for manufacturing the Al matrix composites with combining rapid solidification technique. 5083 Al and 6061 Al alloy flakes prepared by twin rolling are mechanically crushed and mixed simultaneously with Al2O3–TiC fine ceramic powder synthesized by SHS. Mechanical properties, damage and failure in particulate reinforced Al matrix composites have been investigated in tension and compression doing with the microstructural analysis. e strength of particle reinforced 5083 Al composite was increased to 360 MPa by refining grain size resulting from rapid solidification. On the other hand, the strength of aged 6061 Al composite was not affected although fine grain and precipitates were presented. Crack propagation modes were different under tension and compression.