Process for the preparation of aluminium alloys
AssigneeInterox Chemicals Limited
InventorsFrancis R. F. Hardy, Martin G. Griffiths
Life of this patent
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Abstract
Strontium-modified aluminium alloys may be produced by using strontium peroxide as the source of strontium. The strontium peroxide may be mixed with molten aluminium or molten aluminium alloy in a quantity sufficient to give the desired strontium metal content in the alloy being produced. The temperature of the molten aluminium or aluminium alloy with which the strontium peroxide is mixed is preferably at least 1000.degree. C. The strontium peroxide alloys produced may be master alloys for use in the production of casting alloys, or may be casting alloys. Strontium acts as a grain refiner in such alloys.
Claims14
In a process for the production of a strontium-modified aluminium alloy which comprises admixing an aluminium-bearing material and a strontium-bearing material, said aluminium-bearing material consisting of aluminium or aluminium alloyed with at least one member selected from the group consisting of magnesium and silicon, and heating the admixed materials to form a strontium-modified aluminium alloy, the improvement wherein said strontium-bearing material comprises strontium peroxide.
Dependencies are inferred from the claim text.