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US 9,869,008 B2Granted
High-temperature efficient aluminum copper magnesium alloys
AssigneeConstellium Issoire
InventorsGaelle Pouget, Christophe Sigli
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Abstract
The disclosure provides for wrought products made of Al—Cu—Mg aluminum alloy composed as follows, as a percentage by weight, Cucorr: 2,6-3.7; Mgcorr: 1.5-2.6, Mn: 0.2-0.5; Zr: ≦0.16; Ti: 0.01-0.15; Cr≦0.25; Si≦0.2; Fe≦0.2; other elements <0.05 the rest aluminum; with Cucorr>−0.9(Mgcorr)+4.3 and Cucorr<−0.9(Mgcorr)+5.0; where Cucorr=Cu−0.74(Mn−0.2)−2.28 Fe and Mgcorr=Mg−1.73(Si−0.05) for Si≧0.05 and Mgcorr=Mg for Si<0.05 and their manufacturing process.
Claims3
A wrought product comprising an aluminum alloy consisting essentially of, as a percentage by weight,
- Cucorr:
- 2.6-3.7
- Mgcorr:
- 1.5-2.6
- Mn:
- 0.2-0.5
- Zr:
- ≦0.16
- Ti:
- 0.01-0.15
- Cr ≦0.25
- Si ≦0.2
- Fe ≦0.2
- other elements <0.05
- remainder aluminum
- wherein Cucorr>−0.9(Mgcorr)+4.3 and Cucorr<−0.9(Mgcorr)+5.0
- in which Cucorr=Cu−0.74(Mn−0.2)−2.28 Fe and
- Mgcorr=Mg−1.73(Si−0.05) for Si≧0.05 and Mgcorr=Mg for Si<0.05;
- wherein said wrought product is aged such that the mechanical resistance Rp0.2 is a maximum;
- and wherein said wrought product is a wire or bar or screw or bolt or rivet having a substantially recrystallized grain structure.
17 more elements
Dependencies are inferred from the claim text.