Simulation by bombardment with Ni$sup +$ ions of medium energy of the effects of irradiation produced in a reactor in nickel and in austenitic steels (in French)
ABS>From congress on the centenary of the French Physics Society; Vittel, France (28 May 1973). Heavy-ion bombardment can be used to produce in a short time (hours) many atomic displacements that normally require more than a year of reactor irradiation. However, this technique has some objectionable features: low range, nonuniform production of defects with depth, and impurity- atom injection into specimen. Formation of voids by vacancies clustering was studied in pure nickel by 500-keV nickel ion bombardment. Void swelling in- creases with irradiation temperature up to a maximum about 62O deg C, then decreases. Helium pre-injection into nickel increases void density but reduces swelling. Swelling increases linearly with dose. Void size and void density increase quickly during the outset of irradiation. The evolution of dislocation network induced by nickel ion bombardment in stainless steel was studied. A high dislocation density was observed between 400 and 700 deg C. There is no significant variation of dislocation density with the starting microstructure of material (solution treated or cold worked) and with dose when dose runs above 10 dpa. Dislocation density increases with dose rate and decreases with increasing temperature. (auth)
- Research Organization:
- CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)
- Sponsoring Organization:
- Sponsor not identified
- NSA Number:
- NSA-29-005530
- OSTI ID:
- 4934111
- Report Number(s):
- CEA-CONF--2354; CONF-730574--2; SMG--73-1687
- Country of Publication:
- France
- Language:
- French
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DISLOCATIONS
HELIUM
ION BEAMS
KEV RANGE 100-1000
N50240* --Metals
Ceramics
& Other Materials--Metals & Alloys--Radiation Effects
NEUTRON BEAMS
NICKEL
NICKEL IONS
PHYSICAL RADIATION EFFECTS
RADIATION DOSES
SIMULATION
STAINLESS STEEL-316
STAINLESS STEELS
SWELLING
TEMPERATURE DEPENDENCE
VOIDS