Abstract: Molten aluminum-silicon alloys or aluminum base alloys containing substantial amounts of silicon which contain deleterious amounts of titanium are refined by treatment with a fluoride flux less dense than the alloy and having a boiling point above the liquidus temperature of the alloy. The alloy is first prepared or formed in a suitable furnace. The molten alloy formed therein is transferred to a ladle via a tap hole in the furnace. While the molten alloy is in the ladle at the tap hole area, solid granular flux is added thereto in a sufficient amount to reduce but not entirely eliminate the titanium content of the alloy. Subsequently, the alloy and flux are separated. A second fluxing treatment may be performed after the ladle has been removed from the tapping area.

Abstract: A metallurgical process wherein aluminum carbide or other carbides are removed from partially pure aluminum formed by decomposition of an alkyl aluminum compound by treating the aluminum in molten form under a molten cover flux with a stream of chlorine.

Abstract: A method of making an aluminum-silicon composite utilizing aluminum-silicon alloy comprising aluminum as the principal metal with silicon, magnesium and copper in substantial amounts and iron, titanium, magnesium and zinc in lesser amounts and a substantial amount of a non-metal filler such as zircon, alumina, zirconia or aluminum silicates.

Abstract: An aluminum-silicon composite comprising aluminum and silicon as the principal metals with lesser amounts of iron, titanium, magnesium and zinc and a substantial amount of a non-metal filler such as zircon, alumina, zirconia or aluminum silicates.

Abstract: A method of processing an impure aluminum base alloy containing a substantial amount of silicon and a deleterious amount of titanium, which includes melting the alloy and stirring the molten alloy with a molten fluoride flux less dense than the alloy and having a boiling point above the alloy's liquidus temperature, then permitting the stirred mixture to stand to settle out a molten alloy in which the titanium content is reduced but not entirely eliminated, and separating the settled out alloy from the flux.