Defect clusters in neutron-irradiated vanadium containing oxygen

Journal Article · Mon Mar 01 04:00:00 EST 1976 · Metall. Trans., A; (United States)

DOI:https://doi.org/10.1007/BF02642830· OSTI ID:7363503

Bajaj, R ^[1]; Wechsler, M S

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1. Westinghouse Electric Corp., Madison, PA

Single crystal samples of high-purity vanadium containing 95, 300, and 500 wt ppM oxygen were irradiated at 95/sup 0/C in the Ames Laboratory Research Reactor to a dose of 1.4 x 10/sup 19/ neutrons/cm/sup 2/ (E greater than MeV). The density and size distribution of radiation-produced defect clusters were analyzed by transmission electron microscopy in as-irradiated and post-irradiation-annealed material. The defect cluster density was observed to increase with increasing oxygen concentration and the average defect cluster size to decrease. Upon post-irradiation annealing the density decreased and the average size increased, but higher annealing temperatures were required for higher oxygen material. The results are discussed in terms of the nucleation of defect clusters at oxygen atoms and small oxygen-atom aggregates. The increased stability against annealing of higher oxygen vanadium is believed to be due to the greater segregation of oxygen at the defect clusters.

• OSTI ID: 7363503
• Journal Information: Metall. Trans., A; (United States), Journal Name: Metall. Trans., A; (United States) Vol. 7:3; ISSN MTTAB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
ANNEALING
BARYONS
BEAMS
CRYOGENIC FLUIDS
CRYSTALS
DEFECTS
ELECTRON MICROSCOPY
ELEMENTARY PARTICLES
ELEMENTS
FAST NEUTRONS
FERMIONS
FLUIDS
HADRONS
HEAT TREATMENTS
IMPURITIES
MEDIUM TEMPERATURE
METALS
MICROSCOPY
MONOCRYSTALS
NEUTRON BEAMS
NEUTRONS
NONMETALS
NUCLEON BEAMS
NUCLEONS
OXYGEN
PARTICLE BEAMS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
SEGREGATION
TRANSITION ELEMENTS
VANADIUM