Mapping of Microscopic Strain Distributions in an Alloy 600 C-Ring After Application of Hoop Stresses and Stress Corrosion Cracking
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Bibliographic record
Abstract
Laue diffraction measurements made using polychromatic synchrotron x-radiation have revealed significant changes to the microscopic strain distributions in an Alloy 600 (UNS N06600) tube following the application of a circumferential (hoop) stress and then as a result of stress corrosion cracking (SCC). The changes in the elastic and plastic strain distributions were studied for the same area near the outer diameter of the tube prepared as a C-ring. Following the application of the circumferential stress, there was a notable loss of crystal order within the outermost 3 μm to 5 μm of the tube surface as a result of plastic processes; further into the sample the elastic strains in grain boundaries become oriented toward the direction of the impressed stress. The average intensity of oriented tensile strain is 5×10−3 within the outermost 50 μm of the C-ring. After corrosion, the elastic strain distribution in the same region becomes slightly compressive. The strains associated with a network of fine incipient cracks on the outside diameter of the C-ring were explored; elastic compressive strains were found within few micrometers from the crack center presumably as a result of crack opening, while plastic deformation was limited to the immediate crack region.
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| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
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