Al-Cu-Li-Mg alloys with a very high specific mechanical resistance


Ontology type: sgo:Patent     


Patent Info

DATE

1985-10-16T00:00

AUTHORS

DUBOST, BRUNO

ABSTRACT

The present invention relates to Al-based alloys essentially containing Cu, Li and Mg, have a very high specific strength and usable in particular for obtaining heat treated parts of complex shape. The analyzes are as follows (in weight%): Cu2,4à3,5% · · MgdeOàO Li1,9à2,7%, 8% and up to 0.20% Fe 0.10% Si · · · Mn 1% 0.30% Cr 0.2% Zr · · · 0.1% Ti 0.02% Be with, preferably, the following limitation: ≤ 4.8% Cu +% Li + Mg% / 2 ≤ 6.0 . These alloys possess the condition being treated a very high specific mechanical Duty (Vickers / density hardness> 70), even in the absence of plastic deformation between quenching and tempering, which justifies their jobs. among other things, complex shaped parts such as castings or forgings. More... »

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The present invention relates to Al-based alloys essentially containing Cu, Li and Mg, have a very high specific strength and usable in particular for obtaining heat treated parts of complex shape.

The analyzes are as follows (in weight%): Cu2,4à3,5% · · MgdeOàO Li1,9à2,7%, 8% and up to 0.20% Fe 0.10% Si · · · Mn 1% 0.30% Cr 0.2% Zr · · · 0.1% Ti 0.02% Be with, preferably, the following limitation: ≤ 4.8% Cu +% Li + Mg% / 2 ≤ 6.0 .

These alloys possess the condition being treated a very high specific mechanical Duty (Vickers / density hardness> 70), even in the absence of plastic deformation between quenching and tempering, which justifies their jobs. among other things, complex shaped parts such as castings or forgings.

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