Crack initiation due to liquid metal embrittlement for the steel T91 and two ODS steels in Liquid lead

0473169 - ÚFM 2017 RIV US eng C - Konferenční příspěvek (zahraniční konf.)
Rozumová, L. - Di Gabriele, F. - Hojná, A. - Hadraba, Hynek
Crack initiation due to liquid metal embrittlement for the steel T91 and two ODS steels in Liquid lead.
Advances in Materials Science for Environmental and Energy Technologies V - Materials Science and Technology 2015 Conference and Exhibition, MS and T 2015. Columbus: American Ceramic Society, 2016 - (Manjooran, N.; Pickrell, G.; Matyas, J.; Ohji, T.; Kanakala, R.; Wong-Ng, W.), s. 103-111. Ceramic Transactions, 260. ISBN 978-1-119-32361-7. ISSN 1042-1122.
[MS and T 2015 - Advances in Materials Science for Environmental and Energy Technologies V - Materials Science and Technology 2015 Conference and Exhibition. Columbus (US), 04.10.2015-08.10.2015]
Grant CEP: GA ČR(CZ) GA14-25246S
Institucionální podpora: RVO:68081723
Klíčová slova: Engineering controlled terms * Embrittlement * Dispersions
Obor OECD: Materials engineering

Ferritic-martensitic steels and oxide dispersion strengthened steels are materials intensively studied because of their potential to be used for construction of Gen IV fast nuclear reactors. Steels were developed for fast breeder reactors (high-temperature strength and swelling resistance under irradiation). In this study the effect of liquid lead on the crack growth rate of the steels was evaluated. Steels T91, MA957, PM2000 were used to evaluate their interaction with liquid lead under stress corresponding to maximum requested design condition. Liquid Metal Embrittlement (LME) initiation tests were conducted on pre-loaded specimens in flowing liquid metal loops. The experiments were carried out at 400°C and post-test evaluation was performed. Some specimens were pre-treated with a chemical flux, to induce wetting of Pb on the steel; some were polished or ground. Liquid Metal Embrittlement was not observed on the surface of any of the pre-loaded specimens after the exposure in liquid lead at 400°C for 500 hours. The results are discussed and compared with previous accelerated tests.
Trvalý link: http://hdl.handle.net/11104/0270330