Solid-State Processing Route, Mechanical Behaviour, and Oxidation Resistance of TiAl Alloys

Figure 8

Schematic illustration showing the mechanical alloying process of Ti and Al: (a) formation of flaky Ti and Al particles by ball impact; (b) cold welding of flaky particles on ball surfaces and mill container wall; (c) formation of laminates of Ti and Al on milling balls and container wall; (d) refinement of layered structure of the laminates; (e) formation of alloy layer on the surface of laminates; (f) formation of alloy particles by breakage of the alloy layer, as adopted from [58].