Aluminum based Mg-Si-Cu-Mn alloy having high strength and superi

Details Aluminum based Mg-Si-Cu-Mn alloy having high strength and superi Aluminum based Mg-Si-Cu-Mn alloy having high strength and superi

1992-08-17

1993-08-31

Roy, Upendra

Metal treatment

Stock

Age or precipitation hardened or strengthened

420533, 420534, 420535, C22C 2100

Patent

active

052405192

ABSTRACT:
An aluminum alloy consisting of: 1.0-1.5 wt % Si, 0.4-0.9 wt % Cu, 0.2-0.6 wt % Mn, 0.8-1.5 wt % Mg, 0.3-0.9 wt % Cr, 0.03-0.05 wt % Ti, 0.0001-0.01 wt % B, and the balance consisting of Al and unavoidable impurities; the sum of the Mn and Cr contents being not more than 1.2 wt % and the content of Fe as one of the unavoidable impurities being not more than 0.2 wt %. The alloy may further comprise 0.1-0.2 wt % Zr to facilitate the refinement of crystal grains. The alloy has a tensile strength of 40 kgf/mm.sup.2 or more and an elongation of 15% or more when plastically formed, solution-treated and aged to provide the highest strength.

REFERENCES:
patent: 4605448 (1986-08-01), Baba et al.
patent: 4637842 (1987-01-01), Jeffrey et al.
patent: 4784921 (1988-11-01), Hyland et al.
patent: 4808247 (1989-02-01), Konatsubara et al.
patent: 4909861 (1990-03-01), Muraoka et al.

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