Abstract
The internal friction of deformed (e ≤ 2.5 %) CuAl single crystals (0.07 to 0.8 at % Al) was investigated in the temperature range 100 - 650 K at 90 Kc. Two small peaks and a larger one were observed below and just above room temperature. Their peak temperatures depended systematically on the Al content and slightly on the degree of deformation. The height of the smaller peaks was very sensitive to the thermal treatment of the specimens. These dependencies can be explained within the framework of the Labusch-Haasen theory if one assumes an interaction between dislocations and Al-atoms and Al-vacancy complexes, respectively, for the small peaks. An interaction energy of about 0.6 eV is derived in the former case.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
