Method of determining susceptibility of alloys to stress corrosion cracking
US4217180A · kind A · utility
4Cited by
5References
1Claims
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Key dates
| Filing date | Jul 17, 1979 |
| Grant date | Aug 12, 1980 |
| Priority date | — |
| Expiry date | Jul 17, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/42
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Accelerated testing method for determining the susceptibility of alloys to stress corrosion cracking. Test parts are anodized to form an oxide coating thereon. The anodized parts are deformed to a known amount of tensile strain sufficient to rupture the oxide. Microcracks created in the oxide coating occur at the situs of where stress corrosion cracks will occur in service. The parts are reanodized such as to anodically heal the microcracks and the reanodization current transient recorded. The rate of current decay during reanodization is indicative of the alloy's susceptibility to stress corrosion cracking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.