Microstructural evolution and yield stress increase for ion-irradiated V-15Cr-5Ti alloy
The effect of 4-MeV /sup 58/Ni/sup + +/ ion irradiation on the microstructure of the V-15Cr-5Ti alloy was determined for irradiation temperatures ranging from 550 to 750/sup 0/C and for damage levels of 50 to 260 dpa. The swelling of the alloy that could be attributed to voids was negligible (<0.1%). The principle effect of the irradiation was to induce the formation of disc-shape precipitates in the alloy microstructure. The increase of the yield stress for the alloy resulting from the irradiations was evaluated from the irradiation-produced dislocation density and the number density and size of irradiation-produced precipitates. These evaluations showed that the increase of yield stress for the alloy on ion irradiation had a maximum value at approx.50 dpa, and the increase of yield stress decreased for irradiation temperatures above 600/sup 0/C. 8 refs., 5 figs., 2 tabs.
- Research Organization:
- Argonne National Lab., IL (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5756847
- Report Number(s):
- CONF-871036-17; ON: DE88002959
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
700209* -- Fusion Power Plant Technology-- Component Development & Materials Testing
ALLOYS
CHARGED PARTICLES
CHEMICAL ANALYSIS
CRYSTAL STRUCTURE
DENSITY
IONS
MICROSTRUCTURE
NICKEL IONS
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
STRESS ANALYSIS
SWELLING
THERMONUCLEAR REACTORS
VANADIUM ALLOYS