Positron annihilation spectroscopic data which were related to point-defect behavior after quenching, and to thermal equilibrium in β-phase Cu-based shape memory alloys, were summarized. Particular attention was paid to the initial concentration of quenched-in vacancies as a function of quenching temperature, to migration of the retained point defects as a function of aging temperature and time and to the vacancy formation and migration energies.

Point Defect Behavior in β Cu-Based Shape Memory Alloys. R.Romero, A.Somoza: Materials Science and Engineering A, 1999, 273-275, 572-6