SCC tests in SCW at 550°C on two heats of 316L

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

A number of SSRT tests were performed in order to determine best behaving stainless steel for fuel cladding for supercritical water at 550oC with regards to SCC resistance. The materials were limited to austenitic stainless steels which have a code case for reactor internal applications and have a relatively good general corrosion resistance in supercritical water below 550oC. The initial results indicated that SS 316L has good enough SCC resistance, but further tests on another heat of 316L showed adverse results. The former heat showed no SCC whereas the latter heat showed very high SCC susceptibility in as-received (mill-annealed) condition, shot peened condition and in as-received condition with a TIG weld in the middle of the gauge section of the SSRT specimen. Further electrochemical testing of the degree of sensitisation revealed that the heat giving good enough SCC resistance in SSRT test was also partially sensitised.
Original languageEnglish
Title of host publication Proceedings of the 7th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR 2015)
PublisherVTT Technical Research Centre of Finland
Number of pages10
ISBN (Electronic)978-951-38-8289-1
ISBN (Print)978-951-38-8290-7
Publication statusPublished - 2015
MoE publication typeB3 Non-refereed article in conference proceedings
Event7th International Symposium on Supercritical Water-Cooled Reactors, ISSCWR-7 - Helsinki, Finland
Duration: 15 Mar 201518 Mar 2015

Publication series

NameVTT Technology
Number216
ISSN (Electronic)2242-1211

Conference

Conference7th International Symposium on Supercritical Water-Cooled Reactors, ISSCWR-7
Abbreviated titleISSCWR-7
CountryFinland
CityHelsinki
Period15/03/1518/03/15

Fingerprint

Austenitic stainless steel
Gages
Corrosion resistance
Water
Welds
Stainless steel
Hot Temperature
Testing

Cite this

Toivonen, A., Penttilä, S., & Novotny, R. (2015). SCC tests in SCW at 550°C on two heats of 316L. In Proceedings of the 7th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR 2015) [2005] VTT Technical Research Centre of Finland. VTT Technology, No. 216
Toivonen, Aki ; Penttilä, Sami ; Novotny, Radek. / SCC tests in SCW at 550°C on two heats of 316L. Proceedings of the 7th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR 2015). VTT Technical Research Centre of Finland, 2015. (VTT Technology; No. 216).
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abstract = "A number of SSRT tests were performed in order to determine best behaving stainless steel for fuel cladding for supercritical water at 550oC with regards to SCC resistance. The materials were limited to austenitic stainless steels which have a code case for reactor internal applications and have a relatively good general corrosion resistance in supercritical water below 550oC. The initial results indicated that SS 316L has good enough SCC resistance, but further tests on another heat of 316L showed adverse results. The former heat showed no SCC whereas the latter heat showed very high SCC susceptibility in as-received (mill-annealed) condition, shot peened condition and in as-received condition with a TIG weld in the middle of the gauge section of the SSRT specimen. Further electrochemical testing of the degree of sensitisation revealed that the heat giving good enough SCC resistance in SSRT test was also partially sensitised.",
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Toivonen, A, Penttilä, S & Novotny, R 2015, SCC tests in SCW at 550°C on two heats of 316L. in Proceedings of the 7th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR 2015)., 2005, VTT Technical Research Centre of Finland, VTT Technology, no. 216, 7th International Symposium on Supercritical Water-Cooled Reactors, ISSCWR-7, Helsinki, Finland, 15/03/15.

SCC tests in SCW at 550°C on two heats of 316L. / Toivonen, Aki; Penttilä, Sami; Novotny, Radek.

Proceedings of the 7th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR 2015). VTT Technical Research Centre of Finland, 2015. 2005 (VTT Technology; No. 216).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

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T1 - SCC tests in SCW at 550°C on two heats of 316L

AU - Toivonen, Aki

AU - Penttilä, Sami

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N2 - A number of SSRT tests were performed in order to determine best behaving stainless steel for fuel cladding for supercritical water at 550oC with regards to SCC resistance. The materials were limited to austenitic stainless steels which have a code case for reactor internal applications and have a relatively good general corrosion resistance in supercritical water below 550oC. The initial results indicated that SS 316L has good enough SCC resistance, but further tests on another heat of 316L showed adverse results. The former heat showed no SCC whereas the latter heat showed very high SCC susceptibility in as-received (mill-annealed) condition, shot peened condition and in as-received condition with a TIG weld in the middle of the gauge section of the SSRT specimen. Further electrochemical testing of the degree of sensitisation revealed that the heat giving good enough SCC resistance in SSRT test was also partially sensitised.

AB - A number of SSRT tests were performed in order to determine best behaving stainless steel for fuel cladding for supercritical water at 550oC with regards to SCC resistance. The materials were limited to austenitic stainless steels which have a code case for reactor internal applications and have a relatively good general corrosion resistance in supercritical water below 550oC. The initial results indicated that SS 316L has good enough SCC resistance, but further tests on another heat of 316L showed adverse results. The former heat showed no SCC whereas the latter heat showed very high SCC susceptibility in as-received (mill-annealed) condition, shot peened condition and in as-received condition with a TIG weld in the middle of the gauge section of the SSRT specimen. Further electrochemical testing of the degree of sensitisation revealed that the heat giving good enough SCC resistance in SSRT test was also partially sensitised.

M3 - Conference article in proceedings

SN - 978-951-38-8290-7

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BT - Proceedings of the 7th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR 2015)

PB - VTT Technical Research Centre of Finland

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Toivonen A, Penttilä S, Novotny R. SCC tests in SCW at 550°C on two heats of 316L. In Proceedings of the 7th International Symposium on Supercritical Water-Cooled Reactors (ISSCWR 2015). VTT Technical Research Centre of Finland. 2015. 2005. (VTT Technology; No. 216).