Phonon Scattering and Thermal Conductivity of Plastically Deformed Alloys.
Abstract
The lattice component of the thermal conductivity of annealed and cold-worked aluminum-magnesium alloys was determined from 1 to 60K. The principal phonon scattering mechanisms identified were scattering by electrons, by solute atoms, by dislocations and by dislocation loops. The lattice thermal conductivity of copper-nickel alloys was also studied, and measurements of some copper alloys were extended down to 0.5K. The lattice thermal conductivity of two copper-aluminum alloys were studied during cyclic fatigue; the results revealed random dislocations and dislocation arrays. Theoretical studies included scattering of Rayleigh waves by surface irregularities, scattering of phonons by platelets in diamond, thermal resistivity of complex dielectric crystals at high temperatures, formation of solute atmospheres around dislocations and scattering of phonons in ordered alloys. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1975
- Accession Number
- ADA020732
Entities
People
- Dwight H. Damon
- Paul G. Klemens
Organizations
- University of Connecticut