Al-Cu-Mg alloy with high creep resistance
US5738735A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 25, 1996 |
| Grant date | Apr 14, 1998 |
| Priority date | — |
| Expiry date | Jul 25, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C21/16
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A high creep resistance aluminum alloy containing, in percent by weight: PA1 Cu: 2.0-3.0; PA1 Mg: 1.5-2.1; PA1 Mn: 0.3-0.7; PA1 Fe<0.3; PA1 Ni<0.3; PA1 Zr<0.15; PA1 Ti<0.15; PA1 Ag<1.0; PA1 Si<0.6; with Si and Ag in amounts such that 0.3<Si+0.4Ag<0.6; other elements <0.05 each and <0.15 total; and balance Al. The alloy has in its wrought state after being treated by natural aging, quenching and aging, a creep strain after 1,000 h at 150.degree. C. under a stress of 250 MPA of less than 0.3% and a fracture time of at least 2,500 h, and can be used for structural parts for aircraft or spacecraft, rotating machine parts, or plastic processing molds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.