Influence of oxygen impurity atoms on defect clusters and radiation hardening in neutron-irradiated vanadium

Conference · Wed Jan 01 04:00:00 EST 1975

OSTI ID:4109832

Bajaj, R; Wechsler, M S

Single crystal TEM samples and polycrystalline tensile samples of vanadium containing 60-640 wt ppM oxygen were irradiated at about 100$sup 0$C to about 1.3 x 10$sup 19$ neutrons/cm$sup 2$ (E greater than 1 MeV) and post- irradiation annealed up to 800$sup 0$C. The defect cluster density increased and the average size decreased with increasing oxygen concentration. Higher oxygen concentrations caused the radiation hardening and radiation-anneal hardening to increase. The observations are consistent with the nucleation of defect clusters by small oxygen or oxygen-point defect complexes and the trapping of oxygen at defect clusters upon post-irradiation annealing. (auth)

• Research Organization: Westinghouse Electric Corp., Madison, Pa. (USA). Advanced Reactors Div.; Ames Lab., Iowa (USA); Iowa State Univ. of Science and Technology, Ames (USA)
• NSA Number: NSA-33-012655
• OSTI ID: 4109832
• Report Number(s): IS-M--49; CONF-751006--19
• Country of Publication: United States
• Language: English

Related Subjects

*VANADIUM-- PHYSICAL RADIATION EFFECTS
360106* --Materials--Metals & Alloys--Radiation Effects
CHEMICAL COMPOSITION
CRYSTAL DEFECTS
FAST NEUTRONS
IMPURITIES
N50240* --Metals
Ceramics
& Other Materials--Metals & Alloys--Radiation Effects
NEUTRON BEAMS
OXYGEN
QUANTITY RATIO
RADIATION HARDENING