Helium generation rates in isotopically tailored Fe-Cr-Ni alloys irradiated in FFTF/MOTA

Conference · Thu Oct 31 23:00:00 EST 1991

DOI:https://doi.org/10.1016/0022-3115(92)90635-X· OSTI ID:10114985

Greenwood, L R; Garner, F A ^[1]; Oliver, B M ^[2]

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1. Pacific Northwest Lab., Richland, WA (United States)
2. Rockwell International Corp., Canoga Park, CA (United States). Rocketdyne Div.

Three Fe-Cr-Ni alloys have been doped with 0.4% {sup 59}Ni for side-by-side irradiations of doped and undoped materials in order to determine the effects of fusion-relevant levels of helium production on microstructural development and mechanical properties. The alloys were irradiated in three successive cycles of the Materials Open Test Assembly (MOTA) located in the Fast Flux Test Facility (FFTF). Following irradiation, helium levels were measured by isotope dilution mass spectrometry. The highest level of helium achieved in doped alloys was 172 appm at 9.1 dpa for a helium(appm)-to-dpa ratio of 18.9. The overall pattern of predicted helium generation rates in doped and undoped alloys is in good agreement with the helium measurements.

• Research Organization: Pacific Northwest Lab., Richland, WA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 10114985
• Report Number(s): PNL-SA--19318; CONF-911111--20; ON: DE92006421
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700480
CHROMIUM ALLOYS
COMPONENT DEVELOPMENT
DISPLACEMENT RATES
INTERSTITIAL HELIUM GENERATION
IRON BASE ALLOYS
MATERIALS STUDIES
MICROSTRUCTURE
NEUTRON REACTIONS
NICKEL 59
NICKEL ALLOYS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
THERMONUCLEAR REACTOR MATERIALS