Investigations of irradiation embrittlement and annealing behaviour of JRQ pressure vessel steel by instrumented impact tests

Matti Valo, Rauno Rintamaa, Markku Nevalainen, Kim Wallin, Kari Törrönen, Philip Tipping

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

Abstract

Seven series of A533-B type pressure vessel steel specimens irradiated as well as irradiated - annealed - re-irradiated to different fast neutron fluences (up to 5.1019/cm2) have been tested with a new type of instrumented impact test machine. The radiation embrittlement and the effect of the intermediate annealing was assessed by using the ductile and cleavage fracture initiation toughness. Although the ductile fracture initiation toughness exhibited scatter, the transition temperature shift corresponding to the dynamic cleavage fracture initiation agreed well with the 41 J Charpy-V shift. The results indicate that annealing is beneficial in restoring mechanical properties in an irradiated nuclear pressure vessel steel.
Original languageEnglish
Title of host publicationSpecialists Meeting on Irradiation Embrittlement and Optimization of Annealing
Place of PublicationParis
Pages521-533
Publication statusPublished - 1993
MoE publication typeB3 Non-refereed article in conference proceedings
Event1993 Specialists' Meeting on Irradiation Embrittlement and Optimization of Annealing - Paris, France
Duration: 20 Sep 199323 Sep 1993

Publication series

SeriesIAEA Conference Proceedings
NumberIWG-LMNPP 93/03
SeriesINIS Report
NumberNEA-CSNI-R--94-1

Conference

Conference1993 Specialists' Meeting on Irradiation Embrittlement and Optimization of Annealing
CountryFrance
CityParis
Period20/09/9323/09/93

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Valo, M., Rintamaa, R., Nevalainen, M., Wallin, K., Törrönen, K., & Tipping, P. (1993). Investigations of irradiation embrittlement and annealing behaviour of JRQ pressure vessel steel by instrumented impact tests. In Specialists Meeting on Irradiation Embrittlement and Optimization of Annealing (pp. 521-533). IAEA Conference Proceedings, No. IWG-LMNPP 93/03, INIS Report, No. NEA-CSNI-R--94-1 https://inis.iaea.org/search/search.aspx?orig_q=RN:28029684