Two step aging treatment for Ni-Cr-Mo alloys
US6544362B2 · kind B2 · utility
5Cited by
15References
5Claims
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Key dates
| Filing date | Jun 28, 2001 |
| Grant date | Apr 8, 2003 |
| Priority date | — |
| Expiry date | Jul 1, 2021 |
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.