Two step aging treatment for Ni-Cr-Mo alloys
US6638373B2 · kind B2 · utility
4Cited by
16References
10Claims
0Family size
Inventors
Key dates
| Filing date | Jun 7, 2002 |
| Grant date | Oct 28, 2003 |
| Priority date | — |
| Expiry date | Jun 7, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22C19/058
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A two step heat treatment for Ni—Cr—Mo alloys containing from 12% to 23.5% chromium provides higher yield strength, high tensile strength and other mechanical properties comparable to those observed in similar alloys age-hardened according to current practices. This treatment is done over a total time of not more than 50 hours. However, the treatment works for only those alloys having alloying elements present in amounts according to an equation here disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.