Structure and composition of phases occurring in austenitic stainless steels in thermal and irradiation environments
Transmission electron diffraction techniques coupled with quantitative x-ray energy dispersive spectroscopy have been used to characterize the phases which develop in austenitic stainless steels during exposure to thermal and to irradiation environments. In AISI 316 and Ti-modified stainless steels some thirteen phases have been identified and characterized in terms of their crystal structure and chemical composition. Irradiation does not produce any completely new phases. However, as a result of radiation-induced segregation principally of Ni and Si, and of enhanced diffusion rates, several major changes in phase relationships occur during irradiation. Firstly, phases characteristic of remote regions of the phase diagram appear unexpectedly and dissolve during postirradiation annealing (radiation-induced phases). Secondly, some phases develop with their compositions significantly altered by the incorporation of Ni or Si (radiation-modified phases).
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 5889791
- Report Number(s):
- CONF-801072-11; ON: DE82001465
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360106* -- Metals & Alloys-- Radiation Effects
ALLOYS
ANNEALING
BEAMS
CHARGED PARTICLES
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
DATA
ELECTRON MICROSCOPY
EXPERIMENTAL DATA
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HEAT TREATMENTS
INFORMATION
ION BEAMS
IONS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MICROSCOPY
MOLYBDENUM ALLOYS
NEUTRON BEAMS
NICKEL ALLOYS
NICKEL IONS
NUCLEON BEAMS
NUMERICAL DATA
PARTICLE BEAMS
PHASE STUDIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
SEGREGATION
SPECTROSCOPY
STAINLESS STEEL-316
STAINLESS STEELS
STEELS
TITANIUM ADDITIONS
TITANIUM ALLOYS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY SPECTROSCOPY