Abstract
VTT started in 1999 developing capability to conduct LCF tests in hot water environments and published first EAF results for 316NG in the 3rd Int. Conf. on Fatigue of Reactor Components (Seville 2004) and supplemented by results for titanium stabilized alloy 321 in paper PVP2006-93833. This paper revisits these 20 years old experiments in aim to put their significance in perspective and to underline relevant findings on different performance of the stabilized and non-stabilized alloys. An interesting difference in secondary hardening was measured: alloy 321 hardens at RT air, but 316 NG rather in hot water. This finding was in line with the GE (Solomon & Amzallag) results at the time and with more recent research. A warning on misinterpretation of the results is delivered. The tests were properly and reproducibly conducted, but – as most of the EAF facilities – the prototypical EAF devices were not able to provide compliance with the standard LCF test procedure of ASTM E606. The author recommends that the results presented in PVP2006-93833 should not be considered as quantitatively valid fatigue data, but comparison of the material responses within this set should be fine.
| Original language | English |
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| Title of host publication | Codes and Standards; Computer Technology and Bolted Joints |
| Publisher | American Society of Mechanical Engineers (ASME) |
| ISBN (Electronic) | 9780791888476 |
| DOIs | |
| Publication status | Published - 2024 |
| MoE publication type | A4 Article in a conference publication |
| Event | ASME 2024 Pressure Vessels and Piping Conference, PVP 2024 - Bellevue, United States Duration: 28 Jul 2024 → 2 Aug 2024 |
Publication series
| Series | American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP |
|---|---|
| Volume | 1 |
| ISSN | 0277-027X |
Conference
| Conference | ASME 2024 Pressure Vessels and Piping Conference, PVP 2024 |
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| Country/Territory | United States |
| City | Bellevue |
| Period | 28/07/24 → 2/08/24 |
Funding
This \u2018history department\u2019 paper is prepared as part of the Finnish Research Programme on Nuclear Power Plant Safety 2023-2028 (SAFER2028/TOFFEE project) based on results of VTT internal investment in R&D capabilities and a preceding national research program. Discussions with Tommi Sepp\u00E4nen on the timelines of EAF research in Japan and USA (U.S. NRC, EPRI, TEMPES, MITI, \u2026) much helped in putting the early EAF in Finland into the perspective and are thus gratefully acknowledged, as well as contributions of Pekka Moilanen and Gary Marquis in design and verification of the EAF device.
Keywords
- environment
- fatigue
- strain-controlled