In an alloy based on titanium aluminides, metal droplets are obtained from a titanium aluminide metal melt. The metal droplets are enriched with halogens resulting in halogen-enriched titanium aluminide metal droplets. The alloy is molded from the halogen-enriched titanium aluminide metal droplets by, preferably hot isostatic, pressing. Titanium aluminide powder can be heated in a container, for a predetermined period of time, wherein an atmosphere, enriched with halogens, is or will be provided in the container, so that a halogen-enriched titanium aluminide metal powder is formed, or metal droplets are formed from a titanium aluminide metal melt. The metal droplets are enriched with halogens so that halogen-enriched titanium aluminide metal droplets result. Subsequently, the alloy is molded from the halogen-enriched titanium aluminide metal droplets.