Aluminum alloy with additions of scandium, zirconium and erbium
An aluminum alloy including additions of scandium, zirconium, erbium and, optionally, silicon.
1. An aluminum alloy consisting of: a non-zero quantity of scandium present at a concentration of at most about 0.1 at. %; a non-zero quantity of zirconium present at a concentration of at most about 0.1 at. %; a non-zero quantity of erbium present at a concentration of at most about 0.05 at. %; from 0 to about 0.1 at. % silicon; and aluminum forming substantially the balance of said aluminum alloy.
2. The aluminum alloy of claim 1 wherein iron is present in said aluminum alloy as an impurity.
3. The aluminum alloy of claim 1 wherein the content of silicon is at least about 0.02 at. %.
4. The aluminum alloy of claim 1 wherein: the content of erbium is at most about 0.04 at. %; and the content of silicon is 0 at. %.
5. The aluminum alloy of claim 1 wherein: the content of erbium is at most about 0.04 at. %; and the content of silicon is 0 at. %.
6. The aluminum alloy of claim 1 wherein:
the content of scandium is at most about 0.08 at. %;
the content of zirconium is at most about 0.08 at. %;
the content of erbium is at most about 0.04 at. %; and
the content of silicon is at most about 0.08 at. %.
7. The aluminum alloy of claim 1 wherein:
the content of scandium is at most about 0.06 at. %;
the content of zirconium is at most about 0.06 at. %;
the content of erbium is at most about 0.02 at. %; and
the content of silicon is at most about 0.04 at. %.
8. The aluminum alloy of claim 2 wherein the content of iron is at most about 0.0025 at. %.