Nondestructive detection of an undesirable metallic phase, T.sub.1, during processing of aluminum-lithium alloys
US4947117A · kind A · utility
3Cited by
12References
8Claims
0Family size
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Key dates
| Filing date | Jan 3, 1989 |
| Grant date | Aug 7, 1990 |
| Priority date | — |
| Expiry date | Jan 3, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/2028
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method is disclosed for detecting the T.sub.1 phase in aluminum-lithium alloys through simultaneous measurement of conductivity and hardness. In employing eddy current to measure conductivity, when the eddy current decreases with aging of the alloy, while the hardness of the material continues to increase, the presence of the T.sub.1 phase may be detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.