The relative influence of helium/dpa ratio and other variables on neutron-induced swelling of Fe-Ni-Cr alloys at 495 degree C and 14 dpa
- Illinois Univ., Urbana, IL (USA)
- Pacific Northwest Lab., Richland, WA (USA)
An isotopic tailoring experiment utilizing {sup 59}Ni has been conducted in the Fast Flux Test Facility (FFTF) to study the influence of helium/dpa ratio on neutron-induced microstructural evolution. The influence of other variables, namely composition (nickel and phosphorous variations) and cold work on swelling was also examined. The alloys Fe-25Ni-15Cr, Fe-25Ni-15Cr-0.04P, and Fe-45Ni-15Cr were each irradiated in four conditions: solution annealed or 20% cold worked both with and without the {sup 59}Ni additions yielding He/dpa ratios of 0.35 and 4.7 at 25Ni and 0.57 and 4.9 at 45Ni. Increases in helium were found to alter the details of microstructural evolution somewhat at 495{degree}C, but the effect of helium was small compared to the effects of other variables studied. 15 refs., 4 figs.
- Research Organization:
- Pacific Northwest Lab., Richland, WA (USA)
- Sponsoring Organization:
- DOE/ER; NORCUS
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 7164541
- Report Number(s):
- PNL-SA-16981; CONF-891204--26; ON: DE90008621
- Country of Publication:
- United States
- Language:
- English
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ALLOYS
BARYON REACTIONS
BETA DECAY RADIOISOTOPES
CRYSTAL STRUCTURE
DAMAGING NEUTRON FLUENCE
DISPLACEMENT RATES
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTS
EMBRITTLEMENT
EVEN-ODD NUCLEI
HADRON REACTIONS
HELIUM EMBRITTLEMENT
INTERMEDIATE MASS NUCLEI
IRON ALLOYS
IRON BASE ALLOYS
ISOTOPES
MATERIALS
MICROSTRUCTURE
NEUTRON FLUENCE
NEUTRON REACTIONS
NICKEL 59
NICKEL ISOTOPES
NONMETALS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
PHOSPHORUS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
RADIOISOTOPES
SWELLING
THERMONUCLEAR REACTOR MATERIALS
VOIDS
YEARS LIVING RADIOISOTOPES