Ultrasonic study of impurity-interstitial complexes in electron-irradiated Al-Si and Al-Ag
Thesis/Dissertation
·
OSTI ID:5357493
Ultrasonic attenuation and velocity measurements were performed to probe the structure and annealing behavior of solute self-interstitial complexes in electron-irradiated (T < 70K) dilute Al-Ag and Al-Si alloys. In both alloy systems, a similar attenuation peak structure is observed. This peak structure strongly suggests that, in both alloys, a defect species <110>-monoclinic defect symmetry is present. The annealing, during Stage II, of this defect species 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 is examined as a possible explanation for these results.
- Research Organization:
- Illinois Univ., Urbana (USA)
- OSTI ID:
- 5357493
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360106* -- Metals & Alloys-- Radiation Effects
ACOUSTIC TESTING
ALLOYS
ALUMINIUM ALLOYS
ANNEALING
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
HEAT TREATMENTS
IMPURITIES
INTERSTITIALS
MATERIALS TESTING
NONDESTRUCTIVE TESTING
PHYSICAL RADIATION EFFECTS
POINT DEFECTS
RADIATION EFFECTS
SILICON ALLOYS
SILVER ALLOYS
TESTING
ULTRASONIC TESTING
360102 -- Metals & Alloys-- Structure & Phase Studies
360106* -- Metals & Alloys-- Radiation Effects
ACOUSTIC TESTING
ALLOYS
ALUMINIUM ALLOYS
ANNEALING
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
HEAT TREATMENTS
IMPURITIES
INTERSTITIALS
MATERIALS TESTING
NONDESTRUCTIVE TESTING
PHYSICAL RADIATION EFFECTS
POINT DEFECTS
RADIATION EFFECTS
SILICON ALLOYS
SILVER ALLOYS
TESTING
ULTRASONIC TESTING