Fracture toughness characterization in the transition and ductile regime of an A508 type weld metal with the miniI-CT geometry before and after irradiation: PVP2020-21515

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The mini-CT geometry is being adopted worldwide for application to measure the fracture toughness properties. This geometry is particularly adapted for irradiated materials given the limited space available for irradiation in high flux material test reactors such as the BR2 reactor. A series of twenty (20) mini-CT specimens taken from an A508-type weld were irradiated in the BR2 reactor at 290 °C to a fluence level of ~5 x 1019 n/cm², E>1MeV. They were precracked and 20 % side grooved before irradiation. In parallel, twenty four (24) unirradiated mini-CT specimens were available for testing. The main objective of this paper is to measure fracture toughness in the transition and ductile regime before and after irradiation and to compare the results with low flux surveillance data.


Original languageEnglish
Title of host publicationASME 2020 Pressure Vessels & Piping Conference
Subtitle of host publicationCodes and Standards
PublisherASME - The American Society of Mechanical Engineers
Number of pages7
ISBN (Print)978-0-7918-8381-5
Publication statusPublished - 20 Jul 2020
Event2020 - ASME: Pressure Vessel & Piping Conference - Hilton Minneapolis, Minneapolis, United States
Duration: 19 Jul 202024 Jul 2020


Conference2020 - ASME
Country/TerritoryUnited States
OtherThe ASME Pressure Vessels & Piping Division is the primary sponsor of the PVP-2020 Conference, with additional participation by the ASME Nondestructive Evaluation, Diagnosis and Prognosis Division (NDPD). General Topics Codes & Standards Computer Technology & Bolted Joints Design & Analysis Fluid-Structure Interaction High Pressure Technology Materials & Fabrication Operations, Applications, & Components Seismic Engineering Non-Destructive Examination
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  • RPV, Fracture toughness, NOMAD, neutron irradiation

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