Ultrasonic response of dilute AlFe alloys irradiated with 2.5-MeV electrons

Ultrasonic attenuation and velocity measurements were made as a function of polarization, temp., frequency, and annealing before and after 2.5-MeV electron irradiation of dilute AlFe alloys. In addition to the relaxation peaks observed in earlier low-frequency internal-friction measurements, two new...

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Bibliographic Details
Published in:Physical review. B, Condensed matter Condensed matter, 1985-08, Vol.32 (3), p.1453-1460
Main Authors: SETSER, G. G, HULTMAN, K. L, HOLDER, J, GRANATO, A. V
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Mechanical and acoustical properties of condensed matter
Metals, semimetals and alloys
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of bulk materials and thin films
Physics
Specific materials
Ultrasonic relaxation
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Summary:Ultrasonic attenuation and velocity measurements were made as a function of polarization, temp., frequency, and annealing before and after 2.5-MeV electron irradiation of dilute AlFe alloys. In addition to the relaxation peaks observed in earlier low-frequency internal-friction measurements, two new relaxation peaks were found. One of these has all the properties predicted by a size-effect model. The peak structure observed is very different from that found for AlMn, suggesting that theories based only on impurity size require extension. 20 ref.--AA(US).
ISSN:0163-1829
1095-3795
DOI:10.1103/PhysRevB.32.1453