Air quenched heat treatment for aluminum alloys
US10428411B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2014 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Oct 20, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22F1/05
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Methods of processing an air-quenchable aluminum alloy component are provided. The method may include solution heat treating the component, air-quenching the component, and artificially aging the component to a yield strength of at least 200 MPa. The air-quenching may include cooling at a rate of 6° C./s to 25° C./s. The solution heat treatment may include heat treating the component at a temperature of 520° C. to 540° C. and the artificial aging step may include heat treating the component at 235° C. to 255° C. for 0.5 to 2 hours. The disclosed methods may produce a high strength (e.g., over 200 MPa) and high bendability (e.g., r/t ratio up to 0.3) component that does not significantly distort during the quenching process. The disclosed methods may be used to produce structural components having complex shapes, such as multiple, non-coplanar mating surface, while staying within predetermined tolerances.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.