Radiation-induced segregation in complex alloys
Radiation-induced segregation (RIS) of alloying elements to the surface during 3 MeV /sup 58/Ni/sup +/ ion bombardment was investigated in alloys of Fe-200Cr-12Ni (at. %) containing controlled additions of Si and Mo. The segregation profiles, determined by Auger electron spectroscopy, show that Ni and Si are enriched, while Cr and Mo are depleted at the irradiated surfaces. The data indicates that the RIS of Ni and Cr are affected by the presence of Mo and Si in the alloy. However, no obvious trends are observed as a function of the minor solute element concentration. The temperature dependence of the RIS of the alloying elements was also investigated. A maximum of segregation at approx. 500/sup 0/C is observed for Si followed by a minimum and then a sharp increase in segregation at temperatures above 600/sup 0/C. The temperature dependence of segregation for Cr, Ni and Mo shows continous increase with temperature in the temperature regime investigated. The void swelling data on these alloys is also presented as a function of temperature and composition. Additions of Si reduce the swelling by affecting both the nucleation and the growth of the voids. The peak swelling temperature for all the alloys containing minor solutes are found to be lower (approx. 50/sup 0/C) than that of the base alloy (peak swelling temperature approx. 660/sup 0/C).
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31-109-ENG-38
- OSTI ID:
- 6374095
- Report Number(s):
- CONF-801072-6; ON: DE81023840; TRN: 81-011384
- 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
CHROMIUM BASE ALLOYS
PHYSICAL RADIATION EFFECTS
IRON ALLOYS
NICKEL ALLOYS
NICKEL IONS
RANGE
EXPERIMENTAL DATA
INTERMETALLIC COMPOUNDS
MEV RANGE 01-10
MOLYBDENUM ADDITIONS
SEGREGATION
SILICON ADDITIONS
SWELLING
TEMPERATURE DEPENDENCE
VOIDS
ALLOYS
CHARGED PARTICLES
CHROMIUM ALLOYS
DATA
ENERGY RANGE
INFORMATION
IONS
MEV RANGE
MOLYBDENUM ALLOYS
NUMERICAL DATA
RADIATION EFFECTS
SILICON ALLOYS
360605* - Materials- Radiation Effects