Precipitation-hardening nickel-base alloy and method of producing same
US4652315A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1984 |
| Grant date | Mar 24, 1987 |
| Priority date | — |
| Expiry date | Jun 19, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C19/055
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A precipitation-hardening Ni-base alloy exhibiting improved resistance to corrosion under a corrosive environment containing at least one of hydrogen sulfide, carbon dioxide and chloride ions and method of producing the same are disclosed. The alloy is of the .gamma."-phase, or (.gamma.'+.gamma.")-phase precipitation hardening type in which Ti is restricted to less than 0.40% and is comprised of: PA0 C: not greater than 0.050%, PA0 Si: not greater than 0.50%, PA0 Mn: not greater than 2.0%, PA0 Ni: 40-60%, PA0 Cr: 18-27%, PA0 Ti: less than 0.40%, PA0 Mo: 2.5-5.5% and/or W: not greater than 11%, t 2.5%.ltoreq.Mo+1/2W.ltoreq.5.5%, PA0 Al: not greater than than 2.0%, PA0 Nb: 2.5-6.0% and/or Ta: not greater than 2.0%, 2.5%.ltoreq.Nb+1/2Ta.ltoreq.6.0%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.