Science reports of the Research Institutes, Tohoku University. Ser. A, Physics, chemistry and metallurgy. 26:370-370
بيانات النشر:
Tohoku University, 1976.
سنة النشر:
1976
الوصف:
The internal friction of cold-worked Cu-Al alloys is measured with an inverted torsion pendulum in the temperature range between -180℃ and +100℃. Among 10 specimens with different contents of aluminium ranging from 0.01 to 2 at.%, distinct peaks are observed for the two compositions, 0.13 and 0.18 at.%Al, the peak height being larger for the former ; detailed studies are made on 0.13 at.%Al specimens. The peak is introduced by plastic deformation and disappears on annealing at temperatures around +150℃. For a specimen annealed in an oxidizing atmosphere prior to the final deformation, the peak is no longer observed. The peak is considered to be a combined effect of dislocations and aluminium atom-vacancy complexes.
