Challenging Embrittlement Trend Curves with Lower-Than-Usual Irradiation Temperature Data

Research outputpeer-review

Abstract

A series of irradiation-induced embrittlement trend curves was developed in the last decades and gathered in an Excel spreadsheet called PLOTTER to compare the various predicted values with the experimental data. A number of reactor pressure vessel materials, including forgings, plates, and welds with a variety of chemical compositions, were irradiated in the BR2 reactor to a neutron fluence ranging from 3 to 91019 n/cm2, E >1 MeV at lower-than-usual irradiation temperatures (100 and 150C) complemented with medium- to hightemperature irradiation data (260, 290, and 305C) for comparison. Charpy impact tests were performed to determine the ductile-to-brittle transition temperature and the upper-shelf energy level. In addition, some tensile tests were also performed to determine the irradiation-induced hardening. Test results in terms of irradiation-induced hardening and embrittlement were determined and compared with the different embrittlement trend curve predictions. The results are discussed in the perspective of assessing the performances of the various embrittlement trend curves.
Original languageEnglish
Title of host publicationRadiation Embrittlement Trend Curves and Equations and Their Use for RPV Integrity Evaluations
EditorsW.L. Server, M. Brumovsky, M. Kirk
PublisherAmerican Society for Testing and Materials
Pages284-320
Number of pages37
ISBN (Electronic)978-0-8031-7742-0
ISBN (Print)978-0-8031-7741-3
DOIs
StatePublished - 15 Jun 2022
Event2022 - ASTM Symposium on Radiation Embrittlement Trend Curves/Equations and Their Use for RPV Integrity Evaluations - Prague
Duration: 19 Apr 202222 Apr 2022

Conference

Conference2022 - ASTM Symposium on Radiation Embrittlement Trend Curves/Equations and Their Use for RPV Integrity Evaluations
Country/TerritoryCzech Republic
CityPrague
Period2022-04-192022-04-22

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