Patent ID: 7045094

Claim:
An aluminum-based material, comprising: a matrix formed by a solid solution of zinc, magnesium, and copper in aluminum with dispersed particles of phases composed of aluminum, zinc, magnesium, and copper and essentially uniformly distributed in said solid solution wherein said matrix comprises Zn 5–8%, Mg 1.5–3%, Cu 0.5–2%, balance AL, the magnesium content being higher than the copper content, said aluminum-based material containing particles of solidified nickel aluminides essentially uniformly distributed in said matrix and having a total volume of 3.5% to 11% of the aluminum-based material volume, wherein said aluminum-based material additionally comprises essentially uniformly distributed particles of at least one of the aluminides selected from a group consisting of chromium aluminides and zirconium aluminides and having a total volume equal to 0.1% to 0.5% of the aluminum-based material volume, said matrix having a microhardness no less than HV 170, said particles of solidified nickel aluminides having a maximum size no larger than 3 μm and a maximum-to-minimum ratio no higher than 2; and the matrix formed by the solid solution shaped by fluid forging.