Field-ion microscope studies of the defect structure of the primary state of damage of irradiated metals

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

OSTI ID:7360531

Seidman, D. N.

A review is presented of field ion microscope applications in studies of point defect distribution in irradiated metals. FIM results on the primary state of radiation damage in neutron and ion-irradiated iridium and tungsten, at both room-temperature and 78/sup 0/K, showed that it consists of: (1) isolated vacancies; (2) depleted zones; (3) compact vacancy clusters of voids; and (4) dislocation loops. The fraction of vacancies stored in the dislocation loops represented a small fraction of the total vacancy concentration; in the case of tungsten it was approximately 10 percent. These FIM observations provide a simple explanation of the low yield-factor, determined by transmission electron microscopy, for a number of ion-irradiated metals.

• Research Organization: Cornell Univ., Ithaca, N.Y. (USA)
• OSTI ID: 7360531
• Report Number(s): COO-3158-46; CONF-751164-4; TRN: 76-018210
• Resource Relation: Conference: Conference on radiation damage in metals, Cincinnati, OH, USA, 9 Nov 1975
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
IRIDIUM
PHYSICAL RADIATION EFFECTS
TUNGSTEN
DISLOCATIONS
ION BEAMS
LOW TEMPERATURE
MEDIUM TEMPERATURE
NEUTRON BEAMS
VACANCIES
VOIDS
BEAMS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELEMENTS
LINE DEFECTS
METALS
NUCLEON BEAMS
PARTICLE BEAMS
PLATINUM METALS
POINT DEFECTS
RADIATION EFFECTS
REFRACTORY METALS
TRANSITION ELEMENTS
360106* - Metals & Alloys- Radiation Effects