Isotopic tailoring with sup 59 Ni to study the effect of helium on microstructural evolution and mechanical properties of neutron-irradiated Fe-Cr-Ni alloys
- Pacific Northwest Lab., Richland, WA (United States)
- Illinois Univ., Urbana, IL (United States)
- Rockwell International Corp., Canoga Park, CA (United States)
Tensile testing on three model Fe-Cr-Ni alloys removed from four discharges of the {sub 59}Ni isotopic doping experiment in FFTF-MOTA indicates that helium/dpa ratios typical of fusion reactors do not produce changes in the yield strength or elongation that are significantly different from those at much lower helium generation rates. It also appears that tensile properties approach a saturation level that is dependent only on the final irradiation temperature, but not prior temperature history or thermomechanical starting condition. The saturation in mechanical properties reflects a similar saturation in microstructure that is independent of starting condition. The successful conduct of an isotopic doping experiment was found to require post-irradiation measurement of the helium levels in order to compensate for uncertainties in the cross sections for burn-out and burn-in of {sub 59}Ni and for uncertainties in neutron flux and spectra in the vicinity of the edge of the core.
- Research Organization:
- Pacific Northwest Lab., Richland, WA (United States)
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 7181887
- Report Number(s):
- PNL-SA-19945; CONF-920673--10; ON: DE92019372
- Country of Publication:
- United States
- Language:
- English
Similar Records
The influence of helium on mechanical properties of model austenitic alloys determined using sup 59 Ni isotopic tailoring and fast reactor irradiation
The influence of helium on mechanical properties of model austenitic alloys determined using {sup 59}Ni isotopic tailoring and fast reactor irradiation
Related Subjects
360103 -- Metals & Alloys-- Mechanical Properties
360106 -- Metals & Alloys-- Radiation Effects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700480* -- Fusion Technology-- Component Development
ALLOYS
AUSTENITIC STEELS
BETA DECAY RADIOISOTOPES
CHROMIUM ALLOYS
CRYSTAL STRUCTURE
DAMAGING NEUTRON FLUENCE
ELECTRON CAPTURE RADIOISOTOPES
EMBRITTLEMENT
EVEN-ODD NUCLEI
HELIUM EMBRITTLEMENT
INTERMEDIATE MASS NUCLEI
IRON ALLOYS
IRON BASE ALLOYS
ISOTOPES
MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
Ma
Materials Studies-- (1992-)
NEUTRON FLUENCE
NICKEL 59
NICKEL ALLOYS
NICKEL ISOTOPES
NUCLEI
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
RADIOISOTOPES
STEELS
SWELLING
TENSILE PROPERTIES
THERMONUCLEAR REACTOR MATERIALS
YEARS LIVING RADIOISOTOPES
YIELD STRENGTH