Patent ID: 7892482

Claim:
A method for the production of a high-strength material, comprising the steps of: producing a block of aluminum-based base alloy, the base alloy including a content of 5.5 to 13.0 mass-% silicon, a content of magnesium according to the formula Mg [mass-%]=1.73×Si [mass-%]+m, where m=1.5 to 6.0 mass-% magnesium, and a content of copper between 1.0 and 4.0 mass-%; hot-forming the base alloy block into a hot-formed element in at least one hot-forming step subsequent to the producing step; and subjecting the hot-formed element to a heat treatment in a heat treatment step after the hot-forming step, the heat-treatment consisting of a solution heat treatment, a quenching, and an artificial aging; wherein the base alloy contains 0.5 to 1.5 wt.-% magnesium phosphate for the purpose of increasing grain fineness of primary magnesium silicide in the base alloy.