Thermal mechanical treatment of ferrous alloys, and related alloys and articles
US7931758B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2008 |
| Grant date | Apr 26, 2011 |
| Priority date | — |
| Expiry date | Oct 6, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D9/32
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A thermal mechanical treatment method includes hot working a precipitation hardening martensitic stainless steel, quenching the stainless steel, and aging the stainless steel. According to certain embodiments, the thermal mechanical treatment does not include solution heat treating the stainless steel prior to aging or cryogenically cooling the stainless steel. An article includes a precipitation hardening martensitic stainless steel having a process history that includes hot working the stainless steel, quenching the stainless steel, and aging the stainless steel. According to certain embodiments, the process history does not include solution heat treating the stainless steel prior to aging or cryogenically cooling the stainless steel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.