Abstract
The SCC growth rates of 316L weld heat-affected zone (HAZ) and weld metal materials in 288°C pure water were measured. The effects of loading mode and dissolved oxygen on crack growth rate (CGR) were experimentally quantified. Typical intergranular SCC was found in the HAZ specimen, and interdendritic SCC was identified in the weld metal specimen. The HAZ specimen and the weld metal specimen showed quite a similar response to the applied loading modes and the water chemistry, even though their absolute CGR values are different. The crack growth rates under trapezoidal loading are moderately higher than those under constant loading. Switching from the oxygen-bearing water to the hydrogen-bearing water drastically decreased the electrochemical potential and CGR. A time-lag period for crack growth was observed after switching the hydrogenated water back to the oxygen-bearing water, where CGR was low even after the dissolved oxygen concentration and the electrochemical potential had become high.
| Original language | English |
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| Title of host publication | Proceedings - CIS Workshops 2007, 2007 International Conference on Computational Intelligence and Security Workshops, CISW 2007 |
| Pages | 1767-1782 |
| Number of pages | 16 |
| Volume | 3 |
| Publication status | Published - 2007 Dec 1 |
| Event | 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007 - Whistler, BC, Canada Duration: 2007 Apr 19 → 2007 Apr 23 |
Other
| Other | 13th International Conference on Environmental Degradation of Materials in Nuclear Power Systems 2007 |
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| Country | Canada |
| City | Whistler, BC |
| Period | 07/4/19 → 07/4/23 |
ASJC Scopus subject areas
- Nuclear Energy and Engineering
- Safety, Risk, Reliability and Quality
- Materials Science(all)