High dose effects in neutron irradiated face-centered cubic metals
- Pacific Northwest Lab., Richland, WA (United States)
- California Univ., Santa Barbara, CA (United States)
During neutron irradiation, most face-centered cubic metals and alloys develop saturation or quasi-steady state microstructures. This, in turn, leads to saturation levels in mechanical properties and quasi-steady state rates of swelling and creep deformation. Swelling initially plays only a small role in determining these saturation states, but as swelling rises to higher levels, it exerts strong feedback on the microstructure and its response to environmental variables. The influence of swelling, either directly or indirectly via second order mechanisms, such as elemental segregation to void surfaces, eventually causes major changes, not only in irradiation creep and mechanical properties, but also on swelling itself. The feedback effects of swelling on irradiation creep are particularly complex and lead to problems in applying creep data derived from highly pressurized creep tubes to low stress situations, such as fuel pins in liquid metal reactors.
- Research Organization:
- Pacific Northwest Lab., Richland, WA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 10178850
- Report Number(s):
- PNL-SA-21235; CONF-9310133-1; ON: DE93017671; TRN: 93:018853
- Resource Relation:
- Conference: Time dependence of radiation damage accumulation and its impact on material properties,Montreau (Switzerland),14-21 Oct 1993; Other Information: PBD: Jun 1993
- Country of Publication:
- United States
- Language:
- English
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