Creep-resistant magnesium alloy die castings
US6264763A · kind A · utility
11Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 30, 1999 |
| Grant date | Jul 24, 2001 |
| Priority date | — |
| Expiry date | Apr 30, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C23/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A family of die castable, creep-resistant magnesium alloys has been developed for high-temperature structural applications such as automotive engines and transmission cases. These alloys contain between 3% and 6% aluminum, 1.7% and 3.3% calcium, and up to 0.2% strontium. They have demonstrated 25% greater tensile and compressive creep resistance than AE42, a commercial aluminum, rare earth containing magnesium alloy, and corrosion resistance as good as AZ91D. These alloys are estimated to cost less than AZ91D and have good castability in metal molds as used in permanent mold casting and die casting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.