The effect of helium on microstructural evolution and mechanical properties of Fe-Cr-Ni alloys as determined in a spectral tailoring experiment
- Tokyo Univ., Tokai, Ibaraki (Japan)
- Pacific Northwest Lab., Richland, WA (United States)
- Wisconsin Univ., Madison, WI (United States)
Fe-15Cr-XNi alloys irradiated at both low (0.66 to 1.2) and very high (27 to 58) helium/dpa levels exhibit significantly different levels of strengthening due to an unprecedented refinement of cavity microstructure at the very high helium levels. When compounded with the nickel dependence of helium generation, the cavity distribution for some irradiation conditions and alloy compositions can be driven below the critical radius for bubble-to-void conversion, leading to a delay in swelling. The critical radius also appears to be dependent on the nickel level. The refinement may not have resulted from the high helium levels alone, however but also may have been influenced by differences in displacement rate and temperature history in the two experiments.
- Research Organization:
- Pacific Northwest Lab., Richland, WA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 10114727
- Report Number(s):
- PNL-SA--19343; CONF-911111--21; ON: DE92006420
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360106
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700480
AUSTENITIC STEELS
CHROMIUM ALLOYS
COMPONENT DEVELOPMENT
DISPLACEMENT RATES
HELIUM EMBRITTLEMENT
INTERSTITIAL HELIUM GENERATION
IRON BASE ALLOYS
MATERIALS STUDIES
MECHANICAL PROPERTIES
MICROSTRUCTURE
NICKEL ALLOYS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
SWELLING
TEMPERATURE EFFECTS
THERMONUCLEAR REACTOR MATERIALS