Low density press-hardening steel having enhanced mechanical properties
US11951522B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2023 |
| Grant date | Apr 9, 2024 |
| Priority date | — |
| Expiry date | Mar 20, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2261/00
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of forming a shaped steel object is provided. The method includes cutting a blank from an alloy composition including 0.05-0.5 wt. % carbon, 4-12 wt. % manganese, 1-8 wt. % aluminum, 0-0.4 wt. % vanadium, and a remainder balance of iron. The method also includes heating the blank until the blank is austenitized to form a heated blank, transferring the heated blank to a press, forming the heating blank into a predetermined shape to form a stamped object, and decreasing the temperature of the stamped object to a temperature between a martensite start (Ms) temperature of the alloy composition and a martensite final (Mf) temperature of the alloy composition to form a shaped steel object comprising martensite and retained austenite.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.