Effect of radiation-induced segregation on precipitate stability and swelling in irradiated alloys
- Inst. of Physics and Power Engineering, Obninsk (Russian Federation). Nuclear Materials Div.
The radiation-induced segregation of alloy components near point defect sinks with a particular attention to Fe-Cr-Ni based alloys is analyzed. The influence of point defect generation rate on temperature ranges of stability for radiation-retarded M{sub 23}C{sub 4} and radiation-induced Ni{sub 3}Si precipitates in austenitic stainless steels is considered. A method of calculation of steady-state segregation-induced bias in irradiated binary alloys, taking into account Kirkendall forces and drift forces caused by point defect migration and formation energy gradients near sinks, is proposed. Contributions of various forces to the bias in Fe-Cr-Ni and V-Fe alloys are evaluated. The effect of void-precipitate association on swelling is analyzed. The radiation-induced segregation of components and segregation-induced bias for motionless and moving grain boundaries in a Fe-Cr-Ni alloy are calculated by solving the set of coupled diffusion equations for component and point defect concentrations.
- OSTI ID:
- 679525
- Report Number(s):
- CONF-960643--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Radiation-induced segregation and precipitation in ion-irradiated molybdenum-rhenium alloys
Modeling radiation induced segregation in Iron-Chromium alloys