High strength, stable zinc-aluminum alloy
US3972743A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 1975 |
| Grant date | Aug 3, 1976 |
| Priority date | — |
| Expiry date | Oct 20, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/165
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This invention relates to a stable zinc-aluminum quaternary alloy having tensile strength well in excess of 50,000 psi and excellent machinability characteristics, the alloy being formed by subjecting the zinc-aluminum alloy containing from about 20 to 28 weight percent aluminum, from about 0.1 to 3.5 weight percent copper, about 0.01 to 0.5 weight percent magnesium and the remainder zinc, at a temperature between about 550.degree.F., and 750.degree.F., for a time to effect homogenization of said alloy, working the homogenized alloy at a temperature above the eutectoid transformation temperature, quenching the alloy, providing an effective temperature for a period of time to produce transformation into a two-phase alloy and cooling the alloy to ambient temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.