Self-interstitial solute complexes in e/sup -/-irradiated dilute Al-Ag and Al-Si alloys

Journal Article · Sat Oct 15 04:00:00 EDT 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.38.8030· OSTI ID:6856369

Johnson, E C; Granato, A V

Ultrasonic attenuation and velocity measurements were performed to probe the structure and annealing behavior of self-interstitial solute complexes in electron-irradiated (T<70 K) dilute Al-Ag and Al-Si alloys. In both alloy systems, a similar attenuation peak structure is observed. Three peaks are observed to anneal in unison during stage II, suggesting that they arise from the presence of a single defect structure. The annealing of this defect structure follows a first-order rate equation which has a prefactor proportional to the solute concentration. The diaelastic effect associated with this defect is found to be comparable in magnitude and anisotropy to that attributed to <100> self-interstitial dumbbells in pure aluminum. A <110> monoclinic mixed dumbbell model which can account for much of the observed behavior of this defect structure is proposed.

• Research Organization: Department of Physics and Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801
• OSTI ID: 6856369
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 38:12; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656002* -- Condensed Matter Physics-- General Techniques in Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALLOYS
ALUMINIUM ALLOYS
ANNEALING
ATTENUATION
COLLISIONS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELECTRON COLLISIONS
HEAT TREATMENTS
INTERSTITIALS
IRRADIATION
LOW TEMPERATURE
POINT DEFECTS
SILICON ALLOYS
SILVER ALLOYS
SOUND WAVES
STRUCTURAL MODELS
ULTRASONIC WAVES
VELOCITY