Radiation-induced evolution of austenite matrix in silicon-modified AISI 316 alloys
The microstructures of a series of silicon-modified AISI 316 alloys irradiated to fast neutron fluences of about 2-3 and 10 x 10/sup 22/ n/cm/sup 2/ (E > 0.1 MeV at temperatures ranging from 400/sup 0/C to 600/sup 0/C have been examined. The irradiation of AISI 316 leads to an extensive repartition of several elements, particularly nickel and silicon, between the matrix and various precipitate phases. The segregation of nickel at void and grain boundary surfaces at the expense of other faster-diffusing elements is a clear indication that one of the mechanisms driving the microchemical evolution is the Inverse Kirkendall effect. There is evidence that at one sink this mechanism is in competition with the solute drag process associated with interstitial gradients.
- Research Organization:
- Hanford Engineering Development Lab., Richland, WA (USA)
- DOE Contract Number:
- AC14-76FF02170
- OSTI ID:
- 6544507
- Report Number(s):
- HEDL-SA-2158; CONF-801072-5; TRN: 81-009301
- Resource Relation:
- Conference: Symposium on irradiation phase stability, Pittsburgh, PA, USA, 5 Oct 1980
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
STAINLESS STEEL-316
PHYSICAL RADIATION EFFECTS
FAST NEUTRONS
HIGH TEMPERATURE
KEV RANGE 100-1000
MICROSTRUCTURE
SILICON ADDITIONS
ALLOYS
BARYONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
CRYSTAL STRUCTURE
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
HADRONS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
KEV RANGE
MATERIALS
MOLYBDENUM ALLOYS
NEUTRONS
NICKEL ALLOYS
NUCLEONS
RADIATION EFFECTS
SILICON ALLOYS
STAINLESS STEELS
STEELS
360106* - Metals & Alloys- Radiation Effects