Martensitic stainless steel strengthened by copper-nucleated nitride precipitates
US8808471B2 · kind B2 · utility
21Cited by
6References
10Claims
0Family size
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Key dates
| Filing date | Apr 13, 2009 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | Apr 3, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C38/52
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A martensitic stainless steel alloy is strengthened by copper-nucleated nitride precipitates. The alloy includes, in combination by weight percent, about 10.0 to about 12.5 Cr, about 2.0 to about 7.5 Ni, up to about 17.0 Co, about 0.6 to about 1.5 Mo, about 0.5 to about 2.3 Cu, up to about 0.6 Mn, up to about 0.4 Si, about 0.05 to about 0.15 V, up to about 0.10 N, up to about 0.035 C, up to about 0.01 W, and the balance Fe and incidental elements and impurities. The nitride precipitates may be enriched by one or more transition metals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.