Claims
- 1. An aluminum-based alloy useful for driveshaft assemblies, the alloy consisting essentially of, in weight %, 0.50 to 0.70% Si, up to 0.30% Fe, 0.23 to 0.40% Cu, up to 0.02% Mn, 0.80 to 1.10% Mg, up to 0.03% Cr, balance Al and impurities.
- 2. The alloy of claim 1, wherein the Si content is 0.55 to 0.65% and the Mg content is 0.85 to 1.0%.
- 3. The alloy of claim 1, wherein the alloy may include up to 0.20% Zn and up to 0.05% Ti.
- 4. The alloy of claim 1, wherein the alloy does not include any intentionally added elements which retard recrystallization during solid phase transformations.
- 5. The alloy of claim 1, consisting essentially of at least 96% Al, 0.55 to 0.65% Si, 0.23 to 0.30% Cu, 0.85 to 1.0% Mg, up to 0.05% Zn, and up to 0.03% Ti.
- 6. The alloy of claim 1, wherein the alloy comprises a tube of a driveshaft assembly, the tube having a yoke welded to each end thereof.
- 7. The alloy of claim 1, wherein the alloy comprises a drawn and precipitation hardened extruded tube.
- 8. The alloy of claim 1, in a T8 temper having a yield strength of at least 40 ksi, an ultimate tensile strength of at least 45 ksi and elongation of at least 5%.
- 9. The alloy of claim 1, in a T8 temper having a yield strength of at least 45 ksi, an ultimate tensile strength of at least 50 ksi and elongation of at least 10%.
- 10. The alloy of claim 1, wherein the Fe content is no greater than 0.06%.
- 11. The alloy of claim 1, wherein the Mn content is no greater than 0.01%.
- 12. The alloy of claim 11, wherein the Fe content is no greater than 0.06%.
Parent Case Info
This application claims the benefit of U.S. Provisional Application No. 60/111,618, filed Dec. 9, 1998.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
4525326 |
Schwellinger et al. |
Jun 1985 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
960610 |
Jun 1964 |
GB |
Non-Patent Literature Citations (1)
Entry |
ASM Handbook: vol. 4 Heat Treating, p. 846, 1994. |
Provisional Applications (1)
|
Number |
Date |
Country |
|
60/111618 |
Dec 1998 |
US |