Abstract

Three mixtures of elemental powders of Al-25at.%Ti, 48at.%Ti and 70at.%Ti were offered to ball milling process for the formation of intermetallic compounds of Al_3Ti, AlTi and Ti_3Al. Ballmilling or attrition process were carried out at the condition of rotaing speed of 110 or 350 rpm at 10-3 torr vacuum or argon atmospheres. Al_3Tiphases were fully obtained by heat treatment for 1 hors at 600°C with Al-25at.%Ti composition mixtures milled by 100 hours. The amorphous phase was completely formed at the composition of Al-48at.%Ti mixed powders by milling 100hours at the 50 to 1 weight ratio of ball to powder, and AlTi compounds were obtained by heat treament. In the case of Al-70at%Ti mixed powders milled for 100 hours, Ti_3Al and Al_3Tiintermetallic compounds were formed by heat treatment for 1 hour at 600°C. By attrition milling of 350rpm for 10 hours, Ti_3Al phase was formed completley after heat treatment for 1 hour at 600°C.