Shear punch testing of candidate reactor materials after irradiation in fast reactors and spallation environments

• Published in: Journal of nuclear materials Vol. 417; no. 1-3; pp. 1005 - 1008
• Main Authors: Maloy, S.A., Romero, T.J., Hosemann, P., Toloczko, M.B., Dai, Y.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Amsterdam Elsevier B.V 01.10.2011; Elsevier
• Subjects: Applied sciences; Controled nuclear fusion plants; Ducts; Energy; Energy. Thermal use of fuels; Exact sciences and technology; Fission nuclear power plants; Fuels; Installations for energy generation and conversion: thermal and electrical energy; Irradiation; Nuclear engineering; Nuclear fuels; Nuclear power generation; Nuclear reactor components; Nuclear reactors; Shear; Spallation; Nuclear fusion reactor; Proton beam; Martensitic steel; High energy; Test facility; Fast reactor; Reactor material; Ferritic steel; Nickel; Helium; Tension test; Nuclear reactor
• ISSN: 0022-3115; 1873-4820
• DOI: 10.1016/j.jnucmat.2011.02.003

Ferritic/martensitic steels and nickel-base superalloys are potential materials for use in spallation targets and fusion and fast reactors. To investigate the effects of irradiation on these materials, tests were performed after irradiation in the high energy proton beam at the Paul Scherrer Institute (SINQ Target Irradiation Program (STIP), 570MeV), as well on specimens obtained from a driver duct irradiated in the Fast Flux Test Facility (FFTF). Dose accumulations were up to 18dpa for STIP irradiations (at 147–406°C) and up to 155dpa in FFTF (at 383–505°C). The helium/dpa ratios ranged from 0.2 to 80appm/dpa. Mechanical testing was performed at 25°C. Increases in shear yield and shear maximum stress with increasing dose mirrored the results observed from companion tensile tests.