Premium
An experimental investigation of dislocation‐phonon scattering in some copper alloys
Author(s) -
Charsley P.,
Salter J. A. M.,
Leaver A. D. W.
Publication year - 1968
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19680250205
Subject(s) - copper , materials science , dislocation , aluminium , scattering , crystallite , transmission electron microscopy , condensed matter physics , phonon , zinc , phonon scattering , ultimate tensile strength , crystallography , metallurgy , composite material , thermal conductivity , optics , chemistry , nanotechnology , physics
The thermal conductivities of polycrystalline copper alloys, containing 2.8, and 12 at% aluminium and 30 at% zinc, have been measured between 1.5 and 4.2 °K in the annealed state and after tensile deformations up to 12%. Measurements of the dislocation densities in the alloys were made by transmission electron microscopy. It has been found that the scattering power of phonons by unit dislocation density increases linearly with the atomic concentration of aluminium. It would appear that the effect of zinc additions is negligible and that changes in the arrangements of the dislocations does not affect the effective scattering power.