Internal friction and point defects in ordered βCu-Zn and βCu-Zn-Al
- 1 September 1983
- journal article
- Published by IOP Publishing in Journal of Physics F: Metal Physics
- Vol. 13 (9) , 1757-1771
- https://doi.org/10.1088/0305-4608/13/9/005
Abstract
The internal friction and the torsion modulus have been measured in an inverted torsion pendulum using quenched beta Cu-Zn and beta Cu-Zn-Al alloys. Peaks observed at -50 degrees C for the B2 ordered alloys and at -15 degrees C for the DO3 ordered alloys have been associated with (111) nearest neighbour vacancy-Cu atom pairs. Peaks found at 100 degrees C and 200 degrees C have been interpreted as being due to next nearest neighbour Cu pairs on the Zn rich sublattice. From the results a vacancy formation energy of 52 kJ mol-1 is deduced. Comparisons with existing diffusion data are presented.Keywords
This publication has 17 references indexed in Scilit:
- Internal friction in quenched β phase CuZn and CuZnAl alloysScripta Metallurgica, 1980
- On diffusion kinetics in ordered binary alloysPhilosophical Magazine A, 1979
- Deformation behavior and slip systems of quenched β-CuZn single crystalsActa Metallurgica, 1979
- Vacancy models for concentrated binary alloys —II long-range ordered alloysActa Metallurgica, 1967
- A study of a dilute concentration of disorder in the β-Cu-Zn superlatticeJournal of Physics and Chemistry of Solids, 1961
- The cause of the strengthening in quenched beta brassActa Metallurgica, 1959
- Internal friction of β brassActa Metallurgica, 1957
- Radiation Damage of Beta-BrassJournal of Applied Physics, 1953
- Temperature Dependence of Young's Modulus and Internal Friction of Single Crystals of Beta-BrassJournal of Applied Physics, 1952
- The Elastic Constants of Anisotropic MaterialsReviews of Modern Physics, 1946