Abstract
Al-Al_3Ti FGMs were fabricated by a centrifugal method with three different G numbers, i.e., G=10, 30 and 50. Three types of wear specimens were prepared taking into account the Al_3Ti platelet morphology in. the thick-walled FGM ring; the Al_3Ti platelets were arranged with their platelet planes nearly normal to the radial direction as a result of the applied centrifugal force. A significant anisotropic wear resistance was noted at the ring's outer region whereas anisotrppic wear resistance was not observed at the ring's inner region. Based on experimental results, the origin of anisotropic wear resistance in Al-Al_3Ti FGMs was discussed.
