Patent ID: 6531004
Filing Date: 2003-03-11
Classification: C22C

Abstract:
Weldable, corrosion-resistant, high-magnesium content aluminum-magnesium alloy comprising a ternary aluminum-scandium-zirconium phase and consisting essentially of 5 to 6% by weight magnesium (Mg), 0.05 to 0.15% by weight zirconium (Zr), 0.05 to 0.12% by weight manganese (Mn), 0.01 to 0.2% by weight titanium (Ti), 0.05 to 0.5% total by weight of scandium (Sc), terbium (Tb), and optionally at least one additional element selected from the group consisting of the lanthanide series, wherein scandium (Sc) and terbium (Tb) are present as mandatory elements, with said terbium Tb) replacing part of the scandium content such that the amount of terbium (Tb) is larger than the replaced part of the scandium content, and at least one element selected from the group consisting of 0.1 to 0.2% by weight copper (Cu) and 0.1 to 0.4% by weight zinc (Zn), the balance being aluminum and unavoidable contaminants not exceeding 0.1% by weight silicon.