Some effects of preinjected helium and irradiation temperature in void formation in aluminum irradiated with aluminum ions

Journal Article · Fri Oct 01 04:00:00 EDT 1976 · Nucl. Technol.; (United States)

OSTI ID:7334559

Sundquist, M L ^[1]; Donhowe, J M

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1. National Electrostatics Corp., Middleton, WI

To observe the effect of helium and temperature on void formation in aluminum, high-purity foils were irradiated with 1.2- or 1.4-MeV Al/sup +/ ions at temperatures from 30 to 120/sup 0/C, both with and without preinjected helium. Dislocation loops formed in all samples, but the samples without helium produced no voids visible in the transmission electron microscope even after doses up to 2.7 displacements per atom (dpa) (6.5 x 10/sup 15/ Al/sup +//cm/sup 2/). Samples preinjected with 0.1, 1, and 10 appM helium and then irradiated at 100 and 120/sup 0/C produced voids at doses of approximately 0.5 dpa (1.2 x 10/sup 15/ Al/sup +//cm/sup 2/). With irradiation at 75/sup 0/C and below, voids formed only in samples preinjected with 0.1 appM helium. With irradiation at 100/sup 0/C, the average void sizes and void densities were not significantly different for the three helium levels, whereas at 120/sup 0/C the average void size decreased with increasing helium content and the density increased. With helium levels of 0.1 and 1 appM helium, varying the temperature produced an increase in void size with increasing temperature and a decrease in void density.

• OSTI ID: 7334559
• Journal Information: Nucl. Technol.; (United States), Journal Name: Nucl. Technol.; (United States) Vol. 31:1; ISSN NUTYB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
ALUMINIUM
ALUMINIUM IONS
ATOMIC IONS
BEAMS
CHARGED PARTICLES
CRYOGENIC FLUIDS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DISLOCATIONS
ELEMENTS
ENERGY RANGE
FLUIDS
HELIUM
ION BEAMS
IONS
LINE DEFECTS
METALS
MEV RANGE
MEV RANGE 01-10
NONMETALS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
RARE GASES
VOIDS